Home / 135,694.80-187,255.56-79,102.50

Finding the Fourth Proportional to 135,694.80, 187,255.56 and 79,102.50

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Solution

The fourth proportional to 135,694.80, 187,255.56 and 79,102.50 is: 109,159.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,694.80 : 187,255.56 = 79,102.50 : x
  2. Step 2: Convert to fraction form
    135,694.80/187,255.56 = 79,102.50/x
  3. Step 3: Cross multiply
    135,694.80x = 187,255.56 × 79,102.50
  4. Step 4: Simplify right side
    135,694.80x = 14,812,382,934.90
  5. Step 5: Solve for x
    x = 14,812,382,934.90/135,694.80
  6. Step 6: Final answer
    x = 109,159.55

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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.