Home / 127,905.10-191,857.65-72,609.10

Finding the Fourth Proportional to 127,905.10, 191,857.65 and 72,609.10

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Solution

The fourth proportional to 127,905.10, 191,857.65 and 72,609.10 is: 108,913.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,905.10 : 191,857.65 = 72,609.10 : x
  2. Step 2: Convert to fraction form
    127,905.10/191,857.65 = 72,609.10/x
  3. Step 3: Cross multiply
    127,905.10x = 191,857.65 × 72,609.10
  4. Step 4: Simplify right side
    127,905.10x = 13,930,611,294.62
  5. Step 5: Solve for x
    x = 13,930,611,294.62/127,905.10
  6. Step 6: Final answer
    x = 108,913.65

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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.