Home / 107,773.12-148,795-79,429.44

Finding the Fourth Proportional to 107,773.12, 148,795 and 79,429.44

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Solution

The fourth proportional to 107,773.12, 148,795 and 79,429.44 is: 109,662.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,773.12 : 148,795 = 79,429.44 : x
  2. Step 2: Convert to fraction form
    107,773.12/148,795 = 79,429.44/x
  3. Step 3: Cross multiply
    107,773.12x = 148,795 × 79,429.44
  4. Step 4: Simplify right side
    107,773.12x = 11,818,703,524.80
  5. Step 5: Solve for x
    x = 11,818,703,524.80/107,773.12
  6. Step 6: Final answer
    x = 109,662.81

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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.