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Finding the Fourth Proportional to 148,809.62, 223,290.75 and 72,906.72

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Solution

The fourth proportional to 148,809.62, 223,290.75 and 72,906.72 is: 109,397.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,809.62 : 223,290.75 = 72,906.72 : x
  2. Step 2: Convert to fraction form
    148,809.62/223,290.75 = 72,906.72/x
  3. Step 3: Cross multiply
    148,809.62x = 223,290.75 × 72,906.72
  4. Step 4: Simplify right side
    148,809.62x = 16,279,395,624.90
  5. Step 5: Solve for x
    x = 16,279,395,624.90/148,809.62
  6. Step 6: Final answer
    x = 109,397.47

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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.