Home / 131,090.40-196,285.68-115,344

Finding the Fourth Proportional to 131,090.40, 196,285.68 and 115,344

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Solution

The fourth proportional to 131,090.40, 196,285.68 and 115,344 is: 172,708.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,090.40 : 196,285.68 = 115,344 : x
  2. Step 2: Convert to fraction form
    131,090.40/196,285.68 = 115,344/x
  3. Step 3: Cross multiply
    131,090.40x = 196,285.68 × 115,344
  4. Step 4: Simplify right side
    131,090.40x = 22,640,375,473.92
  5. Step 5: Solve for x
    x = 22,640,375,473.92/131,090.40
  6. Step 6: Final answer
    x = 172,708.11

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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.