Home / 138,422.20-207,495.06-68,351.80

Finding the Fourth Proportional to 138,422.20, 207,495.06 and 68,351.80

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Solution

The fourth proportional to 138,422.20, 207,495.06 and 68,351.80 is: 102,459.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,422.20 : 207,495.06 = 68,351.80 : x
  2. Step 2: Convert to fraction form
    138,422.20/207,495.06 = 68,351.80/x
  3. Step 3: Cross multiply
    138,422.20x = 207,495.06 × 68,351.80
  4. Step 4: Simplify right side
    138,422.20x = 14,182,660,842.11
  5. Step 5: Solve for x
    x = 14,182,660,842.11/138,422.20
  6. Step 6: Final answer
    x = 102,459.44

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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.