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Finding the Fourth Proportional to 138,173.80, 207,139.20 and 93,656.20

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Solution

The fourth proportional to 138,173.80, 207,139.20 and 93,656.20 is: 140,401.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,173.80 : 207,139.20 = 93,656.20 : x
  2. Step 2: Convert to fraction form
    138,173.80/207,139.20 = 93,656.20/x
  3. Step 3: Cross multiply
    138,173.80x = 207,139.20 × 93,656.20
  4. Step 4: Simplify right side
    138,173.80x = 19,399,870,343.04
  5. Step 5: Solve for x
    x = 19,399,870,343.04/138,173.80
  6. Step 6: Final answer
    x = 140,401.95

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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.