Home / 135,561.52-187,069.78-75,133.18

Finding the Fourth Proportional to 135,561.52, 187,069.78 and 75,133.18

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Solution

The fourth proportional to 135,561.52, 187,069.78 and 75,133.18 is: 103,680.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,561.52 : 187,069.78 = 75,133.18 : x
  2. Step 2: Convert to fraction form
    135,561.52/187,069.78 = 75,133.18/x
  3. Step 3: Cross multiply
    135,561.52x = 187,069.78 × 75,133.18
  4. Step 4: Simplify right side
    135,561.52x = 14,055,147,453.30
  5. Step 5: Solve for x
    x = 14,055,147,453.30/135,561.52
  6. Step 6: Final answer
    x = 103,680.95

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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.