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Finding the Fourth Proportional to 137,332.58, 205,979.12 and 53,132.47

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Solution

The fourth proportional to 137,332.58, 205,979.12 and 53,132.47 is: 79,691.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,332.58 : 205,979.12 = 53,132.47 : x
  2. Step 2: Convert to fraction form
    137,332.58/205,979.12 = 53,132.47/x
  3. Step 3: Cross multiply
    137,332.58x = 205,979.12 × 53,132.47
  4. Step 4: Simplify right side
    137,332.58x = 10,944,178,832.66
  5. Step 5: Solve for x
    x = 10,944,178,832.66/137,332.58
  6. Step 6: Final answer
    x = 79,691.06

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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.