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Finding the Fourth Proportional to 136,663.52, 188,612.06 and 80,074.89

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Solution

The fourth proportional to 136,663.52, 188,612.06 and 80,074.89 is: 110,512.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,663.52 : 188,612.06 = 80,074.89 : x
  2. Step 2: Convert to fraction form
    136,663.52/188,612.06 = 80,074.89/x
  3. Step 3: Cross multiply
    136,663.52x = 188,612.06 × 80,074.89
  4. Step 4: Simplify right side
    136,663.52x = 15,103,089,556.80
  5. Step 5: Solve for x
    x = 15,103,089,556.80/136,663.52
  6. Step 6: Final answer
    x = 110,512.96

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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.