Home / 83,889.20-125,833.80-80,001.20

Finding the Fourth Proportional to 83,889.20, 125,833.80 and 80,001.20

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Solution

The fourth proportional to 83,889.20, 125,833.80 and 80,001.20 is: 120,001.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,889.20 : 125,833.80 = 80,001.20 : x
  2. Step 2: Convert to fraction form
    83,889.20/125,833.80 = 80,001.20/x
  3. Step 3: Cross multiply
    83,889.20x = 125,833.80 × 80,001.20
  4. Step 4: Simplify right side
    83,889.20x = 10,066,855,000.56
  5. Step 5: Solve for x
    x = 10,066,855,000.56/83,889.20
  6. Step 6: Final answer
    x = 120,001.80

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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.