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Finding the Fourth Proportional to 138,549.39, 207,888.68 and 136,310.45

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Solution

The fourth proportional to 138,549.39, 207,888.68 and 136,310.45 is: 204,529.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,549.39 : 207,888.68 = 136,310.45 : x
  2. Step 2: Convert to fraction form
    138,549.39/207,888.68 = 136,310.45/x
  3. Step 3: Cross multiply
    138,549.39x = 207,888.68 × 136,310.45
  4. Step 4: Simplify right side
    138,549.39x = 28,337,398,055.29
  5. Step 5: Solve for x
    x = 28,337,398,055.29/138,549.39
  6. Step 6: Final answer
    x = 204,529.22

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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.