Home / 126,515.06-174,521.69-81,142.56

Finding the Fourth Proportional to 126,515.06, 174,521.69 and 81,142.56

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Solution

The fourth proportional to 126,515.06, 174,521.69 and 81,142.56 is: 111,932.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,515.06 : 174,521.69 = 81,142.56 : x
  2. Step 2: Convert to fraction form
    126,515.06/174,521.69 = 81,142.56/x
  3. Step 3: Cross multiply
    126,515.06x = 174,521.69 × 81,142.56
  4. Step 4: Simplify right side
    126,515.06x = 14,161,136,600.70
  5. Step 5: Solve for x
    x = 14,161,136,600.70/126,515.06
  6. Step 6: Final answer
    x = 111,932.41

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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.