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Finding the Fourth Proportional to 147,129.75, 220,695.18 and 36,321.75

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Solution

The fourth proportional to 147,129.75, 220,695.18 and 36,321.75 is: 54,482.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,129.75 : 220,695.18 = 36,321.75 : x
  2. Step 2: Convert to fraction form
    147,129.75/220,695.18 = 36,321.75/x
  3. Step 3: Cross multiply
    147,129.75x = 220,695.18 × 36,321.75
  4. Step 4: Simplify right side
    147,129.75x = 8,016,035,154.17
  5. Step 5: Solve for x
    x = 8,016,035,154.17/147,129.75
  6. Step 6: Final answer
    x = 54,482.76

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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.