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Finding the Fourth Proportional to 124,471.89, 171,745.41 and 79,133.25

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Solution

The fourth proportional to 124,471.89, 171,745.41 and 79,133.25 is: 109,187.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,471.89 : 171,745.41 = 79,133.25 : x
  2. Step 2: Convert to fraction form
    124,471.89/171,745.41 = 79,133.25/x
  3. Step 3: Cross multiply
    124,471.89x = 171,745.41 × 79,133.25
  4. Step 4: Simplify right side
    124,471.89x = 13,590,773,406.68
  5. Step 5: Solve for x
    x = 13,590,773,406.68/124,471.89
  6. Step 6: Final answer
    x = 109,187.49

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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.