Home / 126,721.36-174,894-72,996.04

Finding the Fourth Proportional to 126,721.36, 174,894 and 72,996.04

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Solution

The fourth proportional to 126,721.36, 174,894 and 72,996.04 is: 100,745.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,721.36 : 174,894 = 72,996.04 : x
  2. Step 2: Convert to fraction form
    126,721.36/174,894 = 72,996.04/x
  3. Step 3: Cross multiply
    126,721.36x = 174,894 × 72,996.04
  4. Step 4: Simplify right side
    126,721.36x = 12,766,569,419.76
  5. Step 5: Solve for x
    x = 12,766,569,419.76/126,721.36
  6. Step 6: Final answer
    x = 100,745.21

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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.