Home / 138,934.32-207,181.20-137,671.32

Finding the Fourth Proportional to 138,934.32, 207,181.20 and 137,671.32

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Solution

The fourth proportional to 138,934.32, 207,181.20 and 137,671.32 is: 205,297.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,934.32 : 207,181.20 = 137,671.32 : x
  2. Step 2: Convert to fraction form
    138,934.32/207,181.20 = 137,671.32/x
  3. Step 3: Cross multiply
    138,934.32x = 207,181.20 × 137,671.32
  4. Step 4: Simplify right side
    138,934.32x = 28,522,909,283.18
  5. Step 5: Solve for x
    x = 28,522,909,283.18/138,934.32
  6. Step 6: Final answer
    x = 205,297.79

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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.