Home / 136,680.48-188,517.20-100,370.48

Finding the Fourth Proportional to 136,680.48, 188,517.20 and 100,370.48

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Solution

The fourth proportional to 136,680.48, 188,517.20 and 100,370.48 is: 138,436.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,680.48 : 188,517.20 = 100,370.48 : x
  2. Step 2: Convert to fraction form
    136,680.48/188,517.20 = 100,370.48/x
  3. Step 3: Cross multiply
    136,680.48x = 188,517.20 × 100,370.48
  4. Step 4: Simplify right side
    136,680.48x = 18,921,560,407.82
  5. Step 5: Solve for x
    x = 18,921,560,407.82/136,680.48
  6. Step 6: Final answer
    x = 138,436.45

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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.