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Finding the Fourth Proportional to 127,862.20, 191,866.20 and 88,447.60

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Solution

The fourth proportional to 127,862.20, 191,866.20 and 88,447.60 is: 132,721.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,862.20 : 191,866.20 = 88,447.60 : x
  2. Step 2: Convert to fraction form
    127,862.20/191,866.20 = 88,447.60/x
  3. Step 3: Cross multiply
    127,862.20x = 191,866.20 × 88,447.60
  4. Step 4: Simplify right side
    127,862.20x = 16,970,104,911.12
  5. Step 5: Solve for x
    x = 16,970,104,911.12/127,862.20
  6. Step 6: Final answer
    x = 132,721.83

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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.