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Finding the Fourth Proportional to 101,988.28, 140,727.66 and 58,951.78

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Solution

The fourth proportional to 101,988.28, 140,727.66 and 58,951.78 is: 81,344.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,988.28 : 140,727.66 = 58,951.78 : x
  2. Step 2: Convert to fraction form
    101,988.28/140,727.66 = 58,951.78/x
  3. Step 3: Cross multiply
    101,988.28x = 140,727.66 × 58,951.78
  4. Step 4: Simplify right side
    101,988.28x = 8,296,146,052.23
  5. Step 5: Solve for x
    x = 8,296,146,052.23/101,988.28
  6. Step 6: Final answer
    x = 81,344.11

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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.