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Finding the Fourth Proportional to 115,502.67, 159,396.27 and 67,790.43

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Solution

The fourth proportional to 115,502.67, 159,396.27 and 67,790.43 is: 93,552.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,502.67 : 159,396.27 = 67,790.43 : x
  2. Step 2: Convert to fraction form
    115,502.67/159,396.27 = 67,790.43/x
  3. Step 3: Cross multiply
    115,502.67x = 159,396.27 × 67,790.43
  4. Step 4: Simplify right side
    115,502.67x = 10,805,541,683.70
  5. Step 5: Solve for x
    x = 10,805,541,683.70/115,502.67
  6. Step 6: Final answer
    x = 93,552.31

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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.