Home / 88,712.20-132,873.90-78,862.60

Finding the Fourth Proportional to 88,712.20, 132,873.90 and 78,862.60

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Solution

The fourth proportional to 88,712.20, 132,873.90 and 78,862.60 is: 118,121.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,712.20 : 132,873.90 = 78,862.60 : x
  2. Step 2: Convert to fraction form
    88,712.20/132,873.90 = 78,862.60/x
  3. Step 3: Cross multiply
    88,712.20x = 132,873.90 × 78,862.60
  4. Step 4: Simplify right side
    88,712.20x = 10,478,781,226.14
  5. Step 5: Solve for x
    x = 10,478,781,226.14/88,712.20
  6. Step 6: Final answer
    x = 118,121.08

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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.