Home / 131,785.17-181,862.76-71,354.57

Finding the Fourth Proportional to 131,785.17, 181,862.76 and 71,354.57

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Solution

The fourth proportional to 131,785.17, 181,862.76 and 71,354.57 is: 98,468.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,785.17 : 181,862.76 = 71,354.57 : x
  2. Step 2: Convert to fraction form
    131,785.17/181,862.76 = 71,354.57/x
  3. Step 3: Cross multiply
    131,785.17x = 181,862.76 × 71,354.57
  4. Step 4: Simplify right side
    131,785.17x = 12,976,738,129.50
  5. Step 5: Solve for x
    x = 12,976,738,129.50/131,785.17
  6. Step 6: Final answer
    x = 98,468.88

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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.