Home / 135,981.20-187,627.56-79,394.96

Finding the Fourth Proportional to 135,981.20, 187,627.56 and 79,394.96

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Solution

The fourth proportional to 135,981.20, 187,627.56 and 79,394.96 is: 109,549.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,981.20 : 187,627.56 = 79,394.96 : x
  2. Step 2: Convert to fraction form
    135,981.20/187,627.56 = 79,394.96/x
  3. Step 3: Cross multiply
    135,981.20x = 187,627.56 × 79,394.96
  4. Step 4: Simplify right side
    135,981.20x = 14,896,682,621.10
  5. Step 5: Solve for x
    x = 14,896,682,621.10/135,981.20
  6. Step 6: Final answer
    x = 109,549.57

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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.