Home / 136,520.23-188,382.34-79,147.59

Finding the Fourth Proportional to 136,520.23, 188,382.34 and 79,147.59

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Solution

The fourth proportional to 136,520.23, 188,382.34 and 79,147.59 is: 109,214.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,520.23 : 188,382.34 = 79,147.59 : x
  2. Step 2: Convert to fraction form
    136,520.23/188,382.34 = 79,147.59/x
  3. Step 3: Cross multiply
    136,520.23x = 188,382.34 × 79,147.59
  4. Step 4: Simplify right side
    136,520.23x = 14,910,008,209.56
  5. Step 5: Solve for x
    x = 14,910,008,209.56/136,520.23
  6. Step 6: Final answer
    x = 109,214.64

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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.