Home / 231,788.38-319,831.42-135,008.16

Finding the Fourth Proportional to 231,788.38, 319,831.42 and 135,008.16

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Solution

The fourth proportional to 231,788.38, 319,831.42 and 135,008.16 is: 186,289.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,788.38 : 319,831.42 = 135,008.16 : x
  2. Step 2: Convert to fraction form
    231,788.38/319,831.42 = 135,008.16/x
  3. Step 3: Cross multiply
    231,788.38x = 319,831.42 × 135,008.16
  4. Step 4: Simplify right side
    231,788.38x = 43,179,851,293.36
  5. Step 5: Solve for x
    x = 43,179,851,293.36/231,788.38
  6. Step 6: Final answer
    x = 186,289.98

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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.