Home / 136,115.59-187,811.85-79,516.03

Finding the Fourth Proportional to 136,115.59, 187,811.85 and 79,516.03

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Solution

The fourth proportional to 136,115.59, 187,811.85 and 79,516.03 is: 109,715.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,115.59 : 187,811.85 = 79,516.03 : x
  2. Step 2: Convert to fraction form
    136,115.59/187,811.85 = 79,516.03/x
  3. Step 3: Cross multiply
    136,115.59x = 187,811.85 × 79,516.03
  4. Step 4: Simplify right side
    136,115.59x = 14,934,052,698.96
  5. Step 5: Solve for x
    x = 14,934,052,698.96/136,115.59
  6. Step 6: Final answer
    x = 109,715.96

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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.