Home / 231,787.38-319,830.04-135,007.16

Finding the Fourth Proportional to 231,787.38, 319,830.04 and 135,007.16

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Solution

The fourth proportional to 231,787.38, 319,830.04 and 135,007.16 is: 186,288.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,787.38 : 319,830.04 = 135,007.16 : x
  2. Step 2: Convert to fraction form
    231,787.38/319,830.04 = 135,007.16/x
  3. Step 3: Cross multiply
    231,787.38x = 319,830.04 × 135,007.16
  4. Step 4: Simplify right side
    231,787.38x = 43,179,345,405.20
  5. Step 5: Solve for x
    x = 43,179,345,405.20/231,787.38
  6. Step 6: Final answer
    x = 186,288.60

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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.