Home / 126,685.32-190,083.11-79,408.76

Finding the Fourth Proportional to 126,685.32, 190,083.11 and 79,408.76

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Solution

The fourth proportional to 126,685.32, 190,083.11 and 79,408.76 is: 119,147.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,685.32 : 190,083.11 = 79,408.76 : x
  2. Step 2: Convert to fraction form
    126,685.32/190,083.11 = 79,408.76/x
  3. Step 3: Cross multiply
    126,685.32x = 190,083.11 × 79,408.76
  4. Step 4: Simplify right side
    126,685.32x = 15,094,262,714.58
  5. Step 5: Solve for x
    x = 15,094,262,714.58/126,685.32
  6. Step 6: Final answer
    x = 119,147.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.