Home / 135,640.20-187,185.72-75,213.39

Finding the Fourth Proportional to 135,640.20, 187,185.72 and 75,213.39

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Solution

The fourth proportional to 135,640.20, 187,185.72 and 75,213.39 is: 103,795.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,640.20 : 187,185.72 = 75,213.39 : x
  2. Step 2: Convert to fraction form
    135,640.20/187,185.72 = 75,213.39/x
  3. Step 3: Cross multiply
    135,640.20x = 187,185.72 × 75,213.39
  4. Step 4: Simplify right side
    135,640.20x = 14,078,872,560.79
  5. Step 5: Solve for x
    x = 14,078,872,560.79/135,640.20
  6. Step 6: Final answer
    x = 103,795.72

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1.5x scale

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.