Home / 83,521.20-125,281.80-79,633.20

Finding the Fourth Proportional to 83,521.20, 125,281.80 and 79,633.20

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Solution

The fourth proportional to 83,521.20, 125,281.80 and 79,633.20 is: 119,449.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,521.20 : 125,281.80 = 79,633.20 : x
  2. Step 2: Convert to fraction form
    83,521.20/125,281.80 = 79,633.20/x
  3. Step 3: Cross multiply
    83,521.20x = 125,281.80 × 79,633.20
  4. Step 4: Simplify right side
    83,521.20x = 9,976,590,635.76
  5. Step 5: Solve for x
    x = 9,976,590,635.76/83,521.20
  6. Step 6: Final answer
    x = 119,449.80

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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.