Home / 123,778.41-170,814.06-67,189.79

Finding the Fourth Proportional to 123,778.41, 170,814.06 and 67,189.79

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Solution

The fourth proportional to 123,778.41, 170,814.06 and 67,189.79 is: 92,721.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,778.41 : 170,814.06 = 67,189.79 : x
  2. Step 2: Convert to fraction form
    123,778.41/170,814.06 = 67,189.79/x
  3. Step 3: Cross multiply
    123,778.41x = 170,814.06 × 67,189.79
  4. Step 4: Simplify right side
    123,778.41x = 11,476,960,820.45
  5. Step 5: Solve for x
    x = 11,476,960,820.45/123,778.41
  6. Step 6: Final answer
    x = 92,721.83

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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.