Home / 138,317.40-207,476.10-123,445.80

Finding the Fourth Proportional to 138,317.40, 207,476.10 and 123,445.80

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Solution

The fourth proportional to 138,317.40, 207,476.10 and 123,445.80 is: 185,168.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,317.40 : 207,476.10 = 123,445.80 : x
  2. Step 2: Convert to fraction form
    138,317.40/207,476.10 = 123,445.80/x
  3. Step 3: Cross multiply
    138,317.40x = 207,476.10 × 123,445.80
  4. Step 4: Simplify right side
    138,317.40x = 25,612,053,145.38
  5. Step 5: Solve for x
    x = 25,612,053,145.38/138,317.40
  6. Step 6: Final answer
    x = 185,168.70

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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.