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Finding the Fourth Proportional to 128,542.55, 192,938.36 and 62,029.40

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Solution

The fourth proportional to 128,542.55, 192,938.36 and 62,029.40 is: 93,104.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,542.55 : 192,938.36 = 62,029.40 : x
  2. Step 2: Convert to fraction form
    128,542.55/192,938.36 = 62,029.40/x
  3. Step 3: Cross multiply
    128,542.55x = 192,938.36 × 62,029.40
  4. Step 4: Simplify right side
    128,542.55x = 11,967,849,432.95
  5. Step 5: Solve for x
    x = 11,967,849,432.95/128,542.55
  6. Step 6: Final answer
    x = 93,104.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.