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Finding the Fourth Proportional to 143,901.18, 215,835.17 and 38,711.88

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Solution

The fourth proportional to 143,901.18, 215,835.17 and 38,711.88 is: 58,063.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,901.18 : 215,835.17 = 38,711.88 : x
  2. Step 2: Convert to fraction form
    143,901.18/215,835.17 = 38,711.88/x
  3. Step 3: Cross multiply
    143,901.18x = 215,835.17 × 38,711.88
  4. Step 4: Simplify right side
    143,901.18x = 8,355,385,007.26
  5. Step 5: Solve for x
    x = 8,355,385,007.26/143,901.18
  6. Step 6: Final answer
    x = 58,063.35

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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.