Home / 83,047.20-124,441.20-71,901.60

Finding the Fourth Proportional to 83,047.20, 124,441.20 and 71,901.60

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Solution

The fourth proportional to 83,047.20, 124,441.20 and 71,901.60 is: 107,740.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,047.20 : 124,441.20 = 71,901.60 : x
  2. Step 2: Convert to fraction form
    83,047.20/124,441.20 = 71,901.60/x
  3. Step 3: Cross multiply
    83,047.20x = 124,441.20 × 71,901.60
  4. Step 4: Simplify right side
    83,047.20x = 8,947,521,385.92
  5. Step 5: Solve for x
    x = 8,947,521,385.92/83,047.20
  6. Step 6: Final answer
    x = 107,740.19

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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.