Home / 231,002.82-318,789.10-135,578.34

Finding the Fourth Proportional to 231,002.82, 318,789.10 and 135,578.34

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Solution

The fourth proportional to 231,002.82, 318,789.10 and 135,578.34 is: 187,101.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,002.82 : 318,789.10 = 135,578.34 : x
  2. Step 2: Convert to fraction form
    231,002.82/318,789.10 = 135,578.34/x
  3. Step 3: Cross multiply
    231,002.82x = 318,789.10 × 135,578.34
  4. Step 4: Simplify right side
    231,002.82x = 43,220,896,988.09
  5. Step 5: Solve for x
    x = 43,220,896,988.09/231,002.82
  6. Step 6: Final answer
    x = 187,101.17

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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.