Home / 135,742.53-187,316.22-81,995.79

Finding the Fourth Proportional to 135,742.53, 187,316.22 and 81,995.79

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Solution

The fourth proportional to 135,742.53, 187,316.22 and 81,995.79 is: 113,149.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,742.53 : 187,316.22 = 81,995.79 : x
  2. Step 2: Convert to fraction form
    135,742.53/187,316.22 = 81,995.79/x
  3. Step 3: Cross multiply
    135,742.53x = 187,316.22 × 81,995.79
  4. Step 4: Simplify right side
    135,742.53x = 15,359,141,438.71
  5. Step 5: Solve for x
    x = 15,359,141,438.71/135,742.53
  6. Step 6: Final answer
    x = 113,149.07

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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.