Home / 135,523.55-187,025.19-78,938.57

Finding the Fourth Proportional to 135,523.55, 187,025.19 and 78,938.57

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Solution

The fourth proportional to 135,523.55, 187,025.19 and 78,938.57 is: 108,936.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,523.55 : 187,025.19 = 78,938.57 : x
  2. Step 2: Convert to fraction form
    135,523.55/187,025.19 = 78,938.57/x
  3. Step 3: Cross multiply
    135,523.55x = 187,025.19 × 78,938.57
  4. Step 4: Simplify right side
    135,523.55x = 14,763,500,838.15
  5. Step 5: Solve for x
    x = 14,763,500,838.15/135,523.55
  6. Step 6: Final answer
    x = 108,936.79

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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.