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Finding the Fourth Proportional to 151,363.16, 208,881.22 and 87,737.88

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Solution

The fourth proportional to 151,363.16, 208,881.22 and 87,737.88 is: 121,078.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,363.16 : 208,881.22 = 87,737.88 : x
  2. Step 2: Convert to fraction form
    151,363.16/208,881.22 = 87,737.88/x
  3. Step 3: Cross multiply
    151,363.16x = 208,881.22 × 87,737.88
  4. Step 4: Simplify right side
    151,363.16x = 18,326,795,414.61
  5. Step 5: Solve for x
    x = 18,326,795,414.61/151,363.16
  6. Step 6: Final answer
    x = 121,078.31

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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.