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Finding the Fourth Proportional to 115,659.91, 159,701.15 and 88,759.81

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Solution

The fourth proportional to 115,659.91, 159,701.15 and 88,759.81 is: 122,557.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,659.91 : 159,701.15 = 88,759.81 : x
  2. Step 2: Convert to fraction form
    115,659.91/159,701.15 = 88,759.81/x
  3. Step 3: Cross multiply
    115,659.91x = 159,701.15 × 88,759.81
  4. Step 4: Simplify right side
    115,659.91x = 14,175,043,730.78
  5. Step 5: Solve for x
    x = 14,175,043,730.78/115,659.91
  6. Step 6: Final answer
    x = 122,557.97

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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.