Home / 90,699,385,905.60-136,049,078,858.40-81,992,256,561.60

Finding the Fourth Proportional to 90,699,385,905.60, 136,049,078,858.40 and 81,992,256,561.60

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Solution

The fourth proportional to 90,699,385,905.60, 136,049,078,858.40 and 81,992,256,561.60 is: 122,988,384,842.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,699,385,905.60 : 136,049,078,858.40 = 81,992,256,561.60 : x
  2. Step 2: Convert to fraction form
    90,699,385,905.60/136,049,078,858.40 = 81,992,256,561.60/x
  3. Step 3: Cross multiply
    90,699,385,905.60x = 136,049,078,858.40 × 81,992,256,561.60
  4. Step 4: Simplify right side
    90,699,385,905.60x = 11,154,970,978,727,283,916,800
  5. Step 5: Solve for x
    x = 11,154,970,978,727,283,916,800/90,699,385,905.60
  6. Step 6: Final answer
    x = 122,988,384,842.40

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.