Home / 231,767.38-319,870.72-139,891.40

Finding the Fourth Proportional to 231,767.38, 319,870.72 and 139,891.40

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Solution

The fourth proportional to 231,767.38, 319,870.72 and 139,891.40 is: 193,069.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,767.38 : 319,870.72 = 139,891.40 : x
  2. Step 2: Convert to fraction form
    231,767.38/319,870.72 = 139,891.40/x
  3. Step 3: Cross multiply
    231,767.38x = 319,870.72 × 139,891.40
  4. Step 4: Simplify right side
    231,767.38x = 44,747,164,414.11
  5. Step 5: Solve for x
    x = 44,747,164,414.11/231,767.38
  6. Step 6: Final answer
    x = 193,069.30

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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.