Home / 151,691.31-209,332.58-83,708.91

Finding the Fourth Proportional to 151,691.31, 209,332.58 and 83,708.91

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Solution

The fourth proportional to 151,691.31, 209,332.58 and 83,708.91 is: 115,517.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,691.31 : 209,332.58 = 83,708.91 : x
  2. Step 2: Convert to fraction form
    151,691.31/209,332.58 = 83,708.91/x
  3. Step 3: Cross multiply
    151,691.31x = 209,332.58 × 83,708.91
  4. Step 4: Simplify right side
    151,691.31x = 17,523,001,680.74
  5. Step 5: Solve for x
    x = 17,523,001,680.74/151,691.31
  6. Step 6: Final answer
    x = 115,517.51

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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.