Home / 135,960.04-187,687.56-81,538.12

Finding the Fourth Proportional to 135,960.04, 187,687.56 and 81,538.12

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Solution

The fourth proportional to 135,960.04, 187,687.56 and 81,538.12 is: 112,560.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,960.04 : 187,687.56 = 81,538.12 : x
  2. Step 2: Convert to fraction form
    135,960.04/187,687.56 = 81,538.12/x
  3. Step 3: Cross multiply
    135,960.04x = 187,687.56 × 81,538.12
  4. Step 4: Simplify right side
    135,960.04x = 15,303,690,789.79
  5. Step 5: Solve for x
    x = 15,303,690,789.79/135,960.04
  6. Step 6: Final answer
    x = 112,560.21

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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.