Home / 83,778.18-115,575.35-74,227.80

Finding the Fourth Proportional to 83,778.18, 115,575.35 and 74,227.80

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Solution

The fourth proportional to 83,778.18, 115,575.35 and 74,227.80 is: 102,400.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,778.18 : 115,575.35 = 74,227.80 : x
  2. Step 2: Convert to fraction form
    83,778.18/115,575.35 = 74,227.80/x
  3. Step 3: Cross multiply
    83,778.18x = 115,575.35 × 74,227.80
  4. Step 4: Simplify right side
    83,778.18x = 8,578,903,964.73
  5. Step 5: Solve for x
    x = 8,578,903,964.73/83,778.18
  6. Step 6: Final answer
    x = 102,400.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.