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Finding the Fourth Proportional to 102,874.39, 141,888.18 and 88,557.76

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Solution

The fourth proportional to 102,874.39, 141,888.18 and 88,557.76 is: 122,142.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,874.39 : 141,888.18 = 88,557.76 : x
  2. Step 2: Convert to fraction form
    102,874.39/141,888.18 = 88,557.76/x
  3. Step 3: Cross multiply
    102,874.39x = 141,888.18 × 88,557.76
  4. Step 4: Simplify right side
    102,874.39x = 12,565,299,391.28
  5. Step 5: Solve for x
    x = 12,565,299,391.28/102,874.39
  6. Step 6: Final answer
    x = 122,142.15

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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.