Home / 138,919.32-207,158.85-137,656.26

Finding the Fourth Proportional to 138,919.32, 207,158.85 and 137,656.26

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Solution

The fourth proportional to 138,919.32, 207,158.85 and 137,656.26 is: 205,275.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,919.32 : 207,158.85 = 137,656.26 : x
  2. Step 2: Convert to fraction form
    138,919.32/207,158.85 = 137,656.26/x
  3. Step 3: Cross multiply
    138,919.32x = 207,158.85 × 137,656.26
  4. Step 4: Simplify right side
    138,919.32x = 28,516,712,516.90
  5. Step 5: Solve for x
    x = 28,516,712,516.90/138,919.32
  6. Step 6: Final answer
    x = 205,275.35

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.