Home / 135,742.91-187,316.75-81,996.17

Finding the Fourth Proportional to 135,742.91, 187,316.75 and 81,996.17

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Solution

The fourth proportional to 135,742.91, 187,316.75 and 81,996.17 is: 113,149.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,742.91 : 187,316.75 = 81,996.17 : x
  2. Step 2: Convert to fraction form
    135,742.91/187,316.75 = 81,996.17/x
  3. Step 3: Cross multiply
    135,742.91x = 187,316.75 × 81,996.17
  4. Step 4: Simplify right side
    135,742.91x = 15,359,255,345.25
  5. Step 5: Solve for x
    x = 15,359,255,345.25/135,742.91
  6. Step 6: Final answer
    x = 113,149.60

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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.