Home / 138,266.20-207,399.30-68,282.20

Finding the Fourth Proportional to 138,266.20, 207,399.30 and 68,282.20

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Solution

The fourth proportional to 138,266.20, 207,399.30 and 68,282.20 is: 102,423.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,266.20 : 207,399.30 = 68,282.20 : x
  2. Step 2: Convert to fraction form
    138,266.20/207,399.30 = 68,282.20/x
  3. Step 3: Cross multiply
    138,266.20x = 207,399.30 × 68,282.20
  4. Step 4: Simplify right side
    138,266.20x = 14,161,680,482.46
  5. Step 5: Solve for x
    x = 14,161,680,482.46/138,266.20
  6. Step 6: Final answer
    x = 102,423.30

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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.