Home / 257,972.55-386,564.30-108,131.15

Finding the Fourth Proportional to 257,972.55, 386,564.30 and 108,131.15

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Solution

The fourth proportional to 257,972.55, 386,564.30 and 108,131.15 is: 162,031.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,972.55 : 386,564.30 = 108,131.15 : x
  2. Step 2: Convert to fraction form
    257,972.55/386,564.30 = 108,131.15/x
  3. Step 3: Cross multiply
    257,972.55x = 386,564.30 × 108,131.15
  4. Step 4: Simplify right side
    257,972.55x = 41,799,643,139.19
  5. Step 5: Solve for x
    x = 41,799,643,139.19/257,972.55
  6. Step 6: Final answer
    x = 162,031.36

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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.