Home / 88,639.20-132,740.10-66,331.80

Finding the Fourth Proportional to 88,639.20, 132,740.10 and 66,331.80

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Solution

The fourth proportional to 88,639.20, 132,740.10 and 66,331.80 is: 99,334.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,639.20 : 132,740.10 = 66,331.80 : x
  2. Step 2: Convert to fraction form
    88,639.20/132,740.10 = 66,331.80/x
  3. Step 3: Cross multiply
    88,639.20x = 132,740.10 × 66,331.80
  4. Step 4: Simplify right side
    88,639.20x = 8,804,889,765.18
  5. Step 5: Solve for x
    x = 8,804,889,765.18/88,639.20
  6. Step 6: Final answer
    x = 99,334.04

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1.5x scale

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.