Home / 80,952.20-121,428.30-77,841.80

Finding the Fourth Proportional to 80,952.20, 121,428.30 and 77,841.80

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Solution

The fourth proportional to 80,952.20, 121,428.30 and 77,841.80 is: 116,762.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,952.20 : 121,428.30 = 77,841.80 : x
  2. Step 2: Convert to fraction form
    80,952.20/121,428.30 = 77,841.80/x
  3. Step 3: Cross multiply
    80,952.20x = 121,428.30 × 77,841.80
  4. Step 4: Simplify right side
    80,952.20x = 9,452,197,442.94
  5. Step 5: Solve for x
    x = 9,452,197,442.94/80,952.20
  6. Step 6: Final answer
    x = 116,762.70

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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.