Home / 135,863.82-187,514.40-79,275.06

Finding the Fourth Proportional to 135,863.82, 187,514.40 and 79,275.06

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Solution

The fourth proportional to 135,863.82, 187,514.40 and 79,275.06 is: 109,412.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,863.82 : 187,514.40 = 79,275.06 : x
  2. Step 2: Convert to fraction form
    135,863.82/187,514.40 = 79,275.06/x
  3. Step 3: Cross multiply
    135,863.82x = 187,514.40 × 79,275.06
  4. Step 4: Simplify right side
    135,863.82x = 14,865,215,310.86
  5. Step 5: Solve for x
    x = 14,865,215,310.86/135,863.82
  6. Step 6: Final answer
    x = 109,412.61

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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.