Home / 135,729.66-187,307.09-79,151.97

Finding the Fourth Proportional to 135,729.66, 187,307.09 and 79,151.97

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Solution

The fourth proportional to 135,729.66, 187,307.09 and 79,151.97 is: 109,229.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,729.66 : 187,307.09 = 79,151.97 : x
  2. Step 2: Convert to fraction form
    135,729.66/187,307.09 = 79,151.97/x
  3. Step 3: Cross multiply
    135,729.66x = 187,307.09 × 79,151.97
  4. Step 4: Simplify right side
    135,729.66x = 14,825,724,772.71
  5. Step 5: Solve for x
    x = 14,825,724,772.71/135,729.66
  6. Step 6: Final answer
    x = 109,229.81

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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.