Home / 261,961.75-361,507.22-142,729.75

Finding the Fourth Proportional to 261,961.75, 361,507.22 and 142,729.75

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Solution

The fourth proportional to 261,961.75, 361,507.22 and 142,729.75 is: 196,967.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,961.75 : 361,507.22 = 142,729.75 : x
  2. Step 2: Convert to fraction form
    261,961.75/361,507.22 = 142,729.75/x
  3. Step 3: Cross multiply
    261,961.75x = 361,507.22 × 142,729.75
  4. Step 4: Simplify right side
    261,961.75x = 51,597,835,133.80
  5. Step 5: Solve for x
    x = 51,597,835,133.80/261,961.75
  6. Step 6: Final answer
    x = 196,967.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.