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Finding the Fourth Proportional to 126,726.21, 174,921.12 and 73,047.11

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Solution

The fourth proportional to 126,726.21, 174,921.12 and 73,047.11 is: 100,827.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,726.21 : 174,921.12 = 73,047.11 : x
  2. Step 2: Convert to fraction form
    126,726.21/174,921.12 = 73,047.11/x
  3. Step 3: Cross multiply
    126,726.21x = 174,921.12 × 73,047.11
  4. Step 4: Simplify right side
    126,726.21x = 12,777,481,419.36
  5. Step 5: Solve for x
    x = 12,777,481,419.36/126,726.21
  6. Step 6: Final answer
    x = 100,827.46

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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.