Home / 231,767.06-319,812.12-129,778.34

Finding the Fourth Proportional to 231,767.06, 319,812.12 and 129,778.34

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Solution

The fourth proportional to 231,767.06, 319,812.12 and 129,778.34 is: 179,079.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,767.06 : 319,812.12 = 129,778.34 : x
  2. Step 2: Convert to fraction form
    231,767.06/319,812.12 = 129,778.34/x
  3. Step 3: Cross multiply
    231,767.06x = 319,812.12 × 129,778.34
  4. Step 4: Simplify right side
    231,767.06x = 41,504,686,045.48
  5. Step 5: Solve for x
    x = 41,504,686,045.48/231,767.06
  6. Step 6: Final answer
    x = 179,079.31

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1.5x scale

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.