Home / 231,718.78-319,763.04-129,734.70

Finding the Fourth Proportional to 231,718.78, 319,763.04 and 129,734.70

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Solution

The fourth proportional to 231,718.78, 319,763.04 and 129,734.70 is: 179,028.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,718.78 : 319,763.04 = 129,734.70 : x
  2. Step 2: Convert to fraction form
    231,718.78/319,763.04 = 129,734.70/x
  3. Step 3: Cross multiply
    231,718.78x = 319,763.04 × 129,734.70
  4. Step 4: Simplify right side
    231,718.78x = 41,484,362,065.49
  5. Step 5: Solve for x
    x = 41,484,362,065.49/231,718.78
  6. Step 6: Final answer
    x = 179,028.92

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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.