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Finding the Fourth Proportional to 126,102.56, 174,028.96 and 72,387.68

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Solution

The fourth proportional to 126,102.56, 174,028.96 and 72,387.68 is: 99,899.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,102.56 : 174,028.96 = 72,387.68 : x
  2. Step 2: Convert to fraction form
    126,102.56/174,028.96 = 72,387.68/x
  3. Step 3: Cross multiply
    126,102.56x = 174,028.96 × 72,387.68
  4. Step 4: Simplify right side
    126,102.56x = 12,597,552,667.21
  5. Step 5: Solve for x
    x = 12,597,552,667.21/126,102.56
  6. Step 6: Final answer
    x = 99,899.26

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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.