Home / 126,885.92-190,279.67-67,689.29

Finding the Fourth Proportional to 126,885.92, 190,279.67 and 67,689.29

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Solution

The fourth proportional to 126,885.92, 190,279.67 and 67,689.29 is: 101,507.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,885.92 : 190,279.67 = 67,689.29 : x
  2. Step 2: Convert to fraction form
    126,885.92/190,279.67 = 67,689.29/x
  3. Step 3: Cross multiply
    126,885.92x = 190,279.67 × 67,689.29
  4. Step 4: Simplify right side
    126,885.92x = 12,879,895,900.99
  5. Step 5: Solve for x
    x = 12,879,895,900.99/126,885.92
  6. Step 6: Final answer
    x = 101,507.69

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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.