Home / 245,021.20-338,129.29-137,591.31

Finding the Fourth Proportional to 245,021.20, 338,129.29 and 137,591.31

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Solution

The fourth proportional to 245,021.20, 338,129.29 and 137,591.31 is: 189,876.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,021.20 : 338,129.29 = 137,591.31 : x
  2. Step 2: Convert to fraction form
    245,021.20/338,129.29 = 137,591.31/x
  3. Step 3: Cross multiply
    245,021.20x = 338,129.29 × 137,591.31
  4. Step 4: Simplify right side
    245,021.20x = 46,523,650,724.52
  5. Step 5: Solve for x
    x = 46,523,650,724.52/245,021.20
  6. Step 6: Final answer
    x = 189,876.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.