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Finding the Fourth Proportional to 147,286.76, 220,724.18 and 79,672.84

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Solution

The fourth proportional to 147,286.76, 220,724.18 and 79,672.84 is: 119,397.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,286.76 : 220,724.18 = 79,672.84 : x
  2. Step 2: Convert to fraction form
    147,286.76/220,724.18 = 79,672.84/x
  3. Step 3: Cross multiply
    147,286.76x = 220,724.18 × 79,672.84
  4. Step 4: Simplify right side
    147,286.76x = 17,585,722,277.27
  5. Step 5: Solve for x
    x = 17,585,722,277.27/147,286.76
  6. Step 6: Final answer
    x = 119,397.85

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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.