Home / 257,974.92-386,731.53-100,165.86

Finding the Fourth Proportional to 257,974.92, 386,731.53 and 100,165.86

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Solution

The fourth proportional to 257,974.92, 386,731.53 and 100,165.86 is: 150,159.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,974.92 : 386,731.53 = 100,165.86 : x
  2. Step 2: Convert to fraction form
    257,974.92/386,731.53 = 100,165.86/x
  3. Step 3: Cross multiply
    257,974.92x = 386,731.53 × 100,165.86
  4. Step 4: Simplify right side
    257,974.92x = 38,737,296,291.57
  5. Step 5: Solve for x
    x = 38,737,296,291.57/257,974.92
  6. Step 6: Final answer
    x = 150,159.16

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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.