Home / 135,664.39-187,228.70-79,074.55

Finding the Fourth Proportional to 135,664.39, 187,228.70 and 79,074.55

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Solution

The fourth proportional to 135,664.39, 187,228.70 and 79,074.55 is: 109,129.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,664.39 : 187,228.70 = 79,074.55 : x
  2. Step 2: Convert to fraction form
    135,664.39/187,228.70 = 79,074.55/x
  3. Step 3: Cross multiply
    135,664.39x = 187,228.70 × 79,074.55
  4. Step 4: Simplify right side
    135,664.39x = 14,805,025,199.59
  5. Step 5: Solve for x
    x = 14,805,025,199.59/135,664.39
  6. Step 6: Final answer
    x = 109,129.78

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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.