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Finding the Fourth Proportional to 487,113.96, 730,671.58 and 132,127.72

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Solution

The fourth proportional to 487,113.96, 730,671.58 and 132,127.72 is: 198,191.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,113.96 : 730,671.58 = 132,127.72 : x
  2. Step 2: Convert to fraction form
    487,113.96/730,671.58 = 132,127.72/x
  3. Step 3: Cross multiply
    487,113.96x = 730,671.58 × 132,127.72
  4. Step 4: Simplify right side
    487,113.96x = 96,541,969,934.20
  5. Step 5: Solve for x
    x = 96,541,969,934.20/487,113.96
  6. Step 6: Final answer
    x = 198,191.75

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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.