Home / 83,758.20-125,637.30-79,870.20

Finding the Fourth Proportional to 83,758.20, 125,637.30 and 79,870.20

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Solution

The fourth proportional to 83,758.20, 125,637.30 and 79,870.20 is: 119,805.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,758.20 : 125,637.30 = 79,870.20 : x
  2. Step 2: Convert to fraction form
    83,758.20/125,637.30 = 79,870.20/x
  3. Step 3: Cross multiply
    83,758.20x = 125,637.30 × 79,870.20
  4. Step 4: Simplify right side
    83,758.20x = 10,034,676,278.46
  5. Step 5: Solve for x
    x = 10,034,676,278.46/83,758.20
  6. Step 6: Final answer
    x = 119,805.30

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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.