Home / 231,487.05-319,382.15-135,939.45

Finding the Fourth Proportional to 231,487.05, 319,382.15 and 135,939.45

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Solution

The fourth proportional to 231,487.05, 319,382.15 and 135,939.45 is: 187,555.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,487.05 : 319,382.15 = 135,939.45 : x
  2. Step 2: Convert to fraction form
    231,487.05/319,382.15 = 135,939.45/x
  3. Step 3: Cross multiply
    231,487.05x = 319,382.15 × 135,939.45
  4. Step 4: Simplify right side
    231,487.05x = 43,416,633,131.12
  5. Step 5: Solve for x
    x = 43,416,633,131.12/231,487.05
  6. Step 6: Final answer
    x = 187,555.34

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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.