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Finding the Fourth Proportional to 159,639.78, 220,304.43 and 88,022.64

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Solution

The fourth proportional to 159,639.78, 220,304.43 and 88,022.64 is: 121,472.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,639.78 : 220,304.43 = 88,022.64 : x
  2. Step 2: Convert to fraction form
    159,639.78/220,304.43 = 88,022.64/x
  3. Step 3: Cross multiply
    159,639.78x = 220,304.43 × 88,022.64
  4. Step 4: Simplify right side
    159,639.78x = 19,391,777,532.30
  5. Step 5: Solve for x
    x = 19,391,777,532.30/159,639.78
  6. Step 6: Final answer
    x = 121,472.09

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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.