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Finding the Fourth Proportional to 124,859.52, 172,304.46 and 71,147.70

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Solution

The fourth proportional to 124,859.52, 172,304.46 and 71,147.70 is: 98,182.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,859.52 : 172,304.46 = 71,147.70 : x
  2. Step 2: Convert to fraction form
    124,859.52/172,304.46 = 71,147.70/x
  3. Step 3: Cross multiply
    124,859.52x = 172,304.46 × 71,147.70
  4. Step 4: Simplify right side
    124,859.52x = 12,259,066,028.74
  5. Step 5: Solve for x
    x = 12,259,066,028.74/124,859.52
  6. Step 6: Final answer
    x = 98,182.87

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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.