Home / 136,769.12-188,739.96-80,169.56

Finding the Fourth Proportional to 136,769.12, 188,739.96 and 80,169.56

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Solution

The fourth proportional to 136,769.12, 188,739.96 and 80,169.56 is: 110,633.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,769.12 : 188,739.96 = 80,169.56 : x
  2. Step 2: Convert to fraction form
    136,769.12/188,739.96 = 80,169.56/x
  3. Step 3: Cross multiply
    136,769.12x = 188,739.96 × 80,169.56
  4. Step 4: Simplify right side
    136,769.12x = 15,131,199,547.62
  5. Step 5: Solve for x
    x = 15,131,199,547.62/136,769.12
  6. Step 6: Final answer
    x = 110,633.16

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1.5x scale

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.