Home / 257,829.89-386,787.45-108,081.34

Finding the Fourth Proportional to 257,829.89, 386,787.45 and 108,081.34

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Solution

The fourth proportional to 257,829.89, 386,787.45 and 108,081.34 is: 162,139.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,829.89 : 386,787.45 = 108,081.34 : x
  2. Step 2: Convert to fraction form
    257,829.89/386,787.45 = 108,081.34/x
  3. Step 3: Cross multiply
    257,829.89x = 386,787.45 × 108,081.34
  4. Step 4: Simplify right side
    257,829.89x = 41,804,505,329.52
  5. Step 5: Solve for x
    x = 41,804,505,329.52/257,829.89
  6. Step 6: Final answer
    x = 162,139.88

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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.