Home / 123,778.91-170,814.75-67,190.29

Finding the Fourth Proportional to 123,778.91, 170,814.75 and 67,190.29

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Solution

The fourth proportional to 123,778.91, 170,814.75 and 67,190.29 is: 92,722.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,778.91 : 170,814.75 = 67,190.29 : x
  2. Step 2: Convert to fraction form
    123,778.91/170,814.75 = 67,190.29/x
  3. Step 3: Cross multiply
    123,778.91x = 170,814.75 × 67,190.29
  4. Step 4: Simplify right side
    123,778.91x = 11,477,092,588.78
  5. Step 5: Solve for x
    x = 11,477,092,588.78/123,778.91
  6. Step 6: Final answer
    x = 92,722.52

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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.