Home / 135,646.32-187,147.12-81,910.96

Finding the Fourth Proportional to 135,646.32, 187,147.12 and 81,910.96

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Solution

The fourth proportional to 135,646.32, 187,147.12 and 81,910.96 is: 113,010.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,646.32 : 187,147.12 = 81,910.96 : x
  2. Step 2: Convert to fraction form
    135,646.32/187,147.12 = 81,910.96/x
  3. Step 3: Cross multiply
    135,646.32x = 187,147.12 × 81,910.96
  4. Step 4: Simplify right side
    135,646.32x = 15,329,400,260.44
  5. Step 5: Solve for x
    x = 15,329,400,260.44/135,646.32
  6. Step 6: Final answer
    x = 113,010.07

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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.