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Finding the Fourth Proportional to 136,769.88, 188,773.93 and 80,199.48

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Solution

The fourth proportional to 136,769.88, 188,773.93 and 80,199.48 is: 110,693.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,769.88 : 188,773.93 = 80,199.48 : x
  2. Step 2: Convert to fraction form
    136,769.88/188,773.93 = 80,199.48/x
  3. Step 3: Cross multiply
    136,769.88x = 188,773.93 × 80,199.48
  4. Step 4: Simplify right side
    136,769.88x = 15,139,570,622.56
  5. Step 5: Solve for x
    x = 15,139,570,622.56/136,769.88
  6. Step 6: Final answer
    x = 110,693.75

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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.