Home / 124,380.62-171,672.93-79,049.78

Finding the Fourth Proportional to 124,380.62, 171,672.93 and 79,049.78

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Solution

The fourth proportional to 124,380.62, 171,672.93 and 79,049.78 is: 109,106.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,380.62 : 171,672.93 = 79,049.78 : x
  2. Step 2: Convert to fraction form
    124,380.62/171,672.93 = 79,049.78/x
  3. Step 3: Cross multiply
    124,380.62x = 171,672.93 × 79,049.78
  4. Step 4: Simplify right side
    124,380.62x = 13,570,706,490.09
  5. Step 5: Solve for x
    x = 13,570,706,490.09/124,380.62
  6. Step 6: Final answer
    x = 109,106.28

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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.