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Finding the Fourth Proportional to 115,711.36, 159,834.13 and 88,807.61

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Solution

The fourth proportional to 115,711.36, 159,834.13 and 88,807.61 is: 122,671.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,711.36 : 159,834.13 = 88,807.61 : x
  2. Step 2: Convert to fraction form
    115,711.36/159,834.13 = 88,807.61/x
  3. Step 3: Cross multiply
    115,711.36x = 159,834.13 × 88,807.61
  4. Step 4: Simplify right side
    115,711.36x = 14,194,487,081.73
  5. Step 5: Solve for x
    x = 14,194,487,081.73/115,711.36
  6. Step 6: Final answer
    x = 122,671.51

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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.