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Finding the Fourth Proportional to 159,385.60, 219,952.16 and 87,765.44

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Solution

The fourth proportional to 159,385.60, 219,952.16 and 87,765.44 is: 121,116.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,385.60 : 219,952.16 = 87,765.44 : x
  2. Step 2: Convert to fraction form
    159,385.60/219,952.16 = 87,765.44/x
  3. Step 3: Cross multiply
    159,385.60x = 219,952.16 × 87,765.44
  4. Step 4: Simplify right side
    159,385.60x = 19,304,198,101.35
  5. Step 5: Solve for x
    x = 19,304,198,101.35/159,385.60
  6. Step 6: Final answer
    x = 121,116.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.