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Finding the Fourth Proportional to 137,256.64, 205,882.80 and 43,761.76

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Solution

The fourth proportional to 137,256.64, 205,882.80 and 43,761.76 is: 65,641.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,256.64 : 205,882.80 = 43,761.76 : x
  2. Step 2: Convert to fraction form
    137,256.64/205,882.80 = 43,761.76/x
  3. Step 3: Cross multiply
    137,256.64x = 205,882.80 × 43,761.76
  4. Step 4: Simplify right side
    137,256.64x = 9,009,793,681.73
  5. Step 5: Solve for x
    x = 9,009,793,681.73/137,256.64
  6. Step 6: Final answer
    x = 65,641.95

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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.