Home / 261,507.24-392,180.22-136,780.20

Finding the Fourth Proportional to 261,507.24, 392,180.22 and 136,780.20

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Solution

The fourth proportional to 261,507.24, 392,180.22 and 136,780.20 is: 205,128.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,507.24 : 392,180.22 = 136,780.20 : x
  2. Step 2: Convert to fraction form
    261,507.24/392,180.22 = 136,780.20/x
  3. Step 3: Cross multiply
    261,507.24x = 392,180.22 × 136,780.20
  4. Step 4: Simplify right side
    261,507.24x = 53,642,488,927.64
  5. Step 5: Solve for x
    x = 53,642,488,927.64/261,507.24
  6. Step 6: Final answer
    x = 205,128.12

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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.