Home / 136,849.72-205,245.24-79,885.68

Finding the Fourth Proportional to 136,849.72, 205,245.24 and 79,885.68

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Solution

The fourth proportional to 136,849.72, 205,245.24 and 79,885.68 is: 119,811.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,849.72 : 205,245.24 = 79,885.68 : x
  2. Step 2: Convert to fraction form
    136,849.72/205,245.24 = 79,885.68/x
  3. Step 3: Cross multiply
    136,849.72x = 205,245.24 × 79,885.68
  4. Step 4: Simplify right side
    136,849.72x = 16,396,155,564.16
  5. Step 5: Solve for x
    x = 16,396,155,564.16/136,849.72
  6. Step 6: Final answer
    x = 119,811.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.