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Finding the Fourth Proportional to 160,638.52, 221,679.39 and 88,042

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Solution

The fourth proportional to 160,638.52, 221,679.39 and 88,042 is: 121,496.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,638.52 : 221,679.39 = 88,042 : x
  2. Step 2: Convert to fraction form
    160,638.52/221,679.39 = 88,042/x
  3. Step 3: Cross multiply
    160,638.52x = 221,679.39 × 88,042
  4. Step 4: Simplify right side
    160,638.52x = 19,517,096,854.38
  5. Step 5: Solve for x
    x = 19,517,096,854.38/160,638.52
  6. Step 6: Final answer
    x = 121,496.99

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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.