Home / 138,049.10-207,073.65-121,427.90

Finding the Fourth Proportional to 138,049.10, 207,073.65 and 121,427.90

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Solution

The fourth proportional to 138,049.10, 207,073.65 and 121,427.90 is: 182,141.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,049.10 : 207,073.65 = 121,427.90 : x
  2. Step 2: Convert to fraction form
    138,049.10/207,073.65 = 121,427.90/x
  3. Step 3: Cross multiply
    138,049.10x = 207,073.65 × 121,427.90
  4. Step 4: Simplify right side
    138,049.10x = 25,144,518,464.84
  5. Step 5: Solve for x
    x = 25,144,518,464.84/138,049.10
  6. Step 6: Final answer
    x = 182,141.85

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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.