Home / 88,240.20-132,165.90-78,390.60

Finding the Fourth Proportional to 88,240.20, 132,165.90 and 78,390.60

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Solution

The fourth proportional to 88,240.20, 132,165.90 and 78,390.60 is: 117,413.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,240.20 : 132,165.90 = 78,390.60 : x
  2. Step 2: Convert to fraction form
    88,240.20/132,165.90 = 78,390.60/x
  3. Step 3: Cross multiply
    88,240.20x = 132,165.90 × 78,390.60
  4. Step 4: Simplify right side
    88,240.20x = 10,360,564,200.54
  5. Step 5: Solve for x
    x = 10,360,564,200.54/88,240.20
  6. Step 6: Final answer
    x = 117,413.20

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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.