Home / 138,124.18-207,186.27-91,366.12

Finding the Fourth Proportional to 138,124.18, 207,186.27 and 91,366.12

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Solution

The fourth proportional to 138,124.18, 207,186.27 and 91,366.12 is: 137,049.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,124.18 : 207,186.27 = 91,366.12 : x
  2. Step 2: Convert to fraction form
    138,124.18/207,186.27 = 91,366.12/x
  3. Step 3: Cross multiply
    138,124.18x = 207,186.27 × 91,366.12
  4. Step 4: Simplify right side
    138,124.18x = 18,929,805,607.17
  5. Step 5: Solve for x
    x = 18,929,805,607.17/138,124.18
  6. Step 6: Final answer
    x = 137,049.18

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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.