Home / 135,818.04-187,419.81-82,132.66

Finding the Fourth Proportional to 135,818.04, 187,419.81 and 82,132.66

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Solution

The fourth proportional to 135,818.04, 187,419.81 and 82,132.66 is: 113,337.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,818.04 : 187,419.81 = 82,132.66 : x
  2. Step 2: Convert to fraction form
    135,818.04/187,419.81 = 82,132.66/x
  3. Step 3: Cross multiply
    135,818.04x = 187,419.81 × 82,132.66
  4. Step 4: Simplify right side
    135,818.04x = 15,393,287,531.99
  5. Step 5: Solve for x
    x = 15,393,287,531.99/135,818.04
  6. Step 6: Final answer
    x = 113,337.58

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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.