Home / 231,135.12-318,871.49-140,476.48

Finding the Fourth Proportional to 231,135.12, 318,871.49 and 140,476.48

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Solution

The fourth proportional to 231,135.12, 318,871.49 and 140,476.48 is: 193,799.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,135.12 : 318,871.49 = 140,476.48 : x
  2. Step 2: Convert to fraction form
    231,135.12/318,871.49 = 140,476.48/x
  3. Step 3: Cross multiply
    231,135.12x = 318,871.49 × 140,476.48
  4. Step 4: Simplify right side
    231,135.12x = 44,793,942,987.99
  5. Step 5: Solve for x
    x = 44,793,942,987.99/231,135.12
  6. Step 6: Final answer
    x = 193,799.81

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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.