Home / 138,170.61-207,256.25-38,336.15

Finding the Fourth Proportional to 138,170.61, 207,256.25 and 38,336.15

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Solution

The fourth proportional to 138,170.61, 207,256.25 and 38,336.15 is: 57,504.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,170.61 : 207,256.25 = 38,336.15 : x
  2. Step 2: Convert to fraction form
    138,170.61/207,256.25 = 38,336.15/x
  3. Step 3: Cross multiply
    138,170.61x = 207,256.25 × 38,336.15
  4. Step 4: Simplify right side
    138,170.61x = 7,945,407,302.42
  5. Step 5: Solve for x
    x = 7,945,407,302.42/138,170.61
  6. Step 6: Final answer
    x = 57,504.32

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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.