Home / 88,055.40-132,083.10-78,432.60

Finding the Fourth Proportional to 88,055.40, 132,083.10 and 78,432.60

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Solution

The fourth proportional to 88,055.40, 132,083.10 and 78,432.60 is: 117,648.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,055.40 : 132,083.10 = 78,432.60 : x
  2. Step 2: Convert to fraction form
    88,055.40/132,083.10 = 78,432.60/x
  3. Step 3: Cross multiply
    88,055.40x = 132,083.10 × 78,432.60
  4. Step 4: Simplify right side
    88,055.40x = 10,359,620,949.06
  5. Step 5: Solve for x
    x = 10,359,620,949.06/88,055.40
  6. Step 6: Final answer
    x = 117,648.90

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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.