Home / 117,145.22-161,684.25-79,431.62

Finding the Fourth Proportional to 117,145.22, 161,684.25 and 79,431.62

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Solution

The fourth proportional to 117,145.22, 161,684.25 and 79,431.62 is: 109,631.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,145.22 : 161,684.25 = 79,431.62 : x
  2. Step 2: Convert to fraction form
    117,145.22/161,684.25 = 79,431.62/x
  3. Step 3: Cross multiply
    117,145.22x = 161,684.25 × 79,431.62
  4. Step 4: Simplify right side
    117,145.22x = 12,842,841,905.99
  5. Step 5: Solve for x
    x = 12,842,841,905.99/117,145.22
  6. Step 6: Final answer
    x = 109,631.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.