Home / 88,258.20-132,387.30-78,581.40

Finding the Fourth Proportional to 88,258.20, 132,387.30 and 78,581.40

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Solution

The fourth proportional to 88,258.20, 132,387.30 and 78,581.40 is: 117,872.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,258.20 : 132,387.30 = 78,581.40 : x
  2. Step 2: Convert to fraction form
    88,258.20/132,387.30 = 78,581.40/x
  3. Step 3: Cross multiply
    88,258.20x = 132,387.30 × 78,581.40
  4. Step 4: Simplify right side
    88,258.20x = 10,403,179,376.22
  5. Step 5: Solve for x
    x = 10,403,179,376.22/88,258.20
  6. Step 6: Final answer
    x = 117,872.10

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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.