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Finding the Fourth Proportional to 88,040.80, 132,061.20 and 80,437.60

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Solution

The fourth proportional to 88,040.80, 132,061.20 and 80,437.60 is: 120,656.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,040.80 : 132,061.20 = 80,437.60 : x
  2. Step 2: Convert to fraction form
    88,040.80/132,061.20 = 80,437.60/x
  3. Step 3: Cross multiply
    88,040.80x = 132,061.20 × 80,437.60
  4. Step 4: Simplify right side
    88,040.80x = 10,622,685,981.12
  5. Step 5: Solve for x
    x = 10,622,685,981.12/88,040.80
  6. Step 6: Final answer
    x = 120,656.40

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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.