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Finding the Fourth Proportional to 126,593.95, 174,721.13 and 72,910.05

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Solution

The fourth proportional to 126,593.95, 174,721.13 and 72,910.05 is: 100,628.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,593.95 : 174,721.13 = 72,910.05 : x
  2. Step 2: Convert to fraction form
    126,593.95/174,721.13 = 72,910.05/x
  3. Step 3: Cross multiply
    126,593.95x = 174,721.13 × 72,910.05
  4. Step 4: Simplify right side
    126,593.95x = 12,738,925,851.43
  5. Step 5: Solve for x
    x = 12,738,925,851.43/126,593.95
  6. Step 6: Final answer
    x = 100,628.24

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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.