Home / 135,780.76-187,372.38-76,160.92

Finding the Fourth Proportional to 135,780.76, 187,372.38 and 76,160.92

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Solution

The fourth proportional to 135,780.76, 187,372.38 and 76,160.92 is: 105,099.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,780.76 : 187,372.38 = 76,160.92 : x
  2. Step 2: Convert to fraction form
    135,780.76/187,372.38 = 76,160.92/x
  3. Step 3: Cross multiply
    135,780.76x = 187,372.38 × 76,160.92
  4. Step 4: Simplify right side
    135,780.76x = 14,270,452,843.39
  5. Step 5: Solve for x
    x = 14,270,452,843.39/135,780.76
  6. Step 6: Final answer
    x = 105,099.23

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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.