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Finding the Fourth Proportional to 100,901.80, 151,279.80 and 56,542.15

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Solution

The fourth proportional to 100,901.80, 151,279.80 and 56,542.15 is: 84,772.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,901.80 : 151,279.80 = 56,542.15 : x
  2. Step 2: Convert to fraction form
    100,901.80/151,279.80 = 56,542.15/x
  3. Step 3: Cross multiply
    100,901.80x = 151,279.80 × 56,542.15
  4. Step 4: Simplify right side
    100,901.80x = 8,553,685,143.57
  5. Step 5: Solve for x
    x = 8,553,685,143.57/100,901.80
  6. Step 6: Final answer
    x = 84,772.37

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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.