Home / 138,190.20-207,273.34-84,140.92

Finding the Fourth Proportional to 138,190.20, 207,273.34 and 84,140.92

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Solution

The fourth proportional to 138,190.20, 207,273.34 and 84,140.92 is: 126,204.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,190.20 : 207,273.34 = 84,140.92 : x
  2. Step 2: Convert to fraction form
    138,190.20/207,273.34 = 84,140.92/x
  3. Step 3: Cross multiply
    138,190.20x = 207,273.34 × 84,140.92
  4. Step 4: Simplify right side
    138,190.20x = 17,440,169,519.07
  5. Step 5: Solve for x
    x = 17,440,169,519.07/138,190.20
  6. Step 6: Final answer
    x = 126,204.10

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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.