Home / 136,803.20-188,712.56-80,203.68

Finding the Fourth Proportional to 136,803.20, 188,712.56 and 80,203.68

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Solution

The fourth proportional to 136,803.20, 188,712.56 and 80,203.68 is: 110,636.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,803.20 : 188,712.56 = 80,203.68 : x
  2. Step 2: Convert to fraction form
    136,803.20/188,712.56 = 80,203.68/x
  3. Step 3: Cross multiply
    136,803.20x = 188,712.56 × 80,203.68
  4. Step 4: Simplify right side
    136,803.20x = 15,135,441,774.22
  5. Step 5: Solve for x
    x = 15,135,441,774.22/136,803.20
  6. Step 6: Final answer
    x = 110,636.61

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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.