Home / 83,359.40-125,330.70-81,609.80

Finding the Fourth Proportional to 83,359.40, 125,330.70 and 81,609.80

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Solution

The fourth proportional to 83,359.40, 125,330.70 and 81,609.80 is: 122,700.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,359.40 : 125,330.70 = 81,609.80 : x
  2. Step 2: Convert to fraction form
    83,359.40/125,330.70 = 81,609.80/x
  3. Step 3: Cross multiply
    83,359.40x = 125,330.70 × 81,609.80
  4. Step 4: Simplify right side
    83,359.40x = 10,228,213,360.86
  5. Step 5: Solve for x
    x = 10,228,213,360.86/83,359.40
  6. Step 6: Final answer
    x = 122,700.18

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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.