Home / 135,666.14-187,231.11-79,076.30

Finding the Fourth Proportional to 135,666.14, 187,231.11 and 79,076.30

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Solution

The fourth proportional to 135,666.14, 187,231.11 and 79,076.30 is: 109,132.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,666.14 : 187,231.11 = 79,076.30 : x
  2. Step 2: Convert to fraction form
    135,666.14/187,231.11 = 79,076.30/x
  3. Step 3: Cross multiply
    135,666.14x = 187,231.11 × 79,076.30
  4. Step 4: Simplify right side
    135,666.14x = 14,805,543,423.69
  5. Step 5: Solve for x
    x = 14,805,543,423.69/135,666.14
  6. Step 6: Final answer
    x = 109,132.19

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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.