Home / 88,270.20-132,210.90-78,420.60

Finding the Fourth Proportional to 88,270.20, 132,210.90 and 78,420.60

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Solution

The fourth proportional to 88,270.20, 132,210.90 and 78,420.60 is: 117,458.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,270.20 : 132,210.90 = 78,420.60 : x
  2. Step 2: Convert to fraction form
    88,270.20/132,210.90 = 78,420.60/x
  3. Step 3: Cross multiply
    88,270.20x = 132,210.90 × 78,420.60
  4. Step 4: Simplify right side
    88,270.20x = 10,368,058,104.54
  5. Step 5: Solve for x
    x = 10,368,058,104.54/88,270.20
  6. Step 6: Final answer
    x = 117,458.19

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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.