Home / 138,113.20-207,180.24-38,272.24

Finding the Fourth Proportional to 138,113.20, 207,180.24 and 38,272.24

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Solution

The fourth proportional to 138,113.20, 207,180.24 and 38,272.24 is: 57,411.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,113.20 : 207,180.24 = 38,272.24 : x
  2. Step 2: Convert to fraction form
    138,113.20/207,180.24 = 38,272.24/x
  3. Step 3: Cross multiply
    138,113.20x = 207,180.24 × 38,272.24
  4. Step 4: Simplify right side
    138,113.20x = 7,929,251,868.54
  5. Step 5: Solve for x
    x = 7,929,251,868.54/138,113.20
  6. Step 6: Final answer
    x = 57,411.25

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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.