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Finding the Fourth Proportional to 101,139.76, 151,565.05 and 74,275.03

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Solution

The fourth proportional to 101,139.76, 151,565.05 and 74,275.03 is: 111,306.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,139.76 : 151,565.05 = 74,275.03 : x
  2. Step 2: Convert to fraction form
    101,139.76/151,565.05 = 74,275.03/x
  3. Step 3: Cross multiply
    101,139.76x = 151,565.05 × 74,275.03
  4. Step 4: Simplify right side
    101,139.76x = 11,257,498,635.70
  5. Step 5: Solve for x
    x = 11,257,498,635.70/101,139.76
  6. Step 6: Final answer
    x = 111,306.36

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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.