Home / 136,360.64-188,198.24-79,790.40

Finding the Fourth Proportional to 136,360.64, 188,198.24 and 79,790.40

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Solution

The fourth proportional to 136,360.64, 188,198.24 and 79,790.40 is: 110,122.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,360.64 : 188,198.24 = 79,790.40 : x
  2. Step 2: Convert to fraction form
    136,360.64/188,198.24 = 79,790.40/x
  3. Step 3: Cross multiply
    136,360.64x = 188,198.24 × 79,790.40
  4. Step 4: Simplify right side
    136,360.64x = 15,016,412,848.90
  5. Step 5: Solve for x
    x = 15,016,412,848.90/136,360.64
  6. Step 6: Final answer
    x = 110,122.78

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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.