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Finding the Fourth Proportional to 115,148.52, 158,916.67 and 64,169.55

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Solution

The fourth proportional to 115,148.52, 158,916.67 and 64,169.55 is: 88,560.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,148.52 : 158,916.67 = 64,169.55 : x
  2. Step 2: Convert to fraction form
    115,148.52/158,916.67 = 64,169.55/x
  3. Step 3: Cross multiply
    115,148.52x = 158,916.67 × 64,169.55
  4. Step 4: Simplify right side
    115,148.52x = 10,197,611,040.97
  5. Step 5: Solve for x
    x = 10,197,611,040.97/115,148.52
  6. Step 6: Final answer
    x = 88,560.50

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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.