Home / 126,900.76-190,437.28-67,778.88

Finding the Fourth Proportional to 126,900.76, 190,437.28 and 67,778.88

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Solution

The fourth proportional to 126,900.76, 190,437.28 and 67,778.88 is: 101,714.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,900.76 : 190,437.28 = 67,778.88 : x
  2. Step 2: Convert to fraction form
    126,900.76/190,437.28 = 67,778.88/x
  3. Step 3: Cross multiply
    126,900.76x = 190,437.28 × 67,778.88
  4. Step 4: Simplify right side
    126,900.76x = 12,907,625,548.65
  5. Step 5: Solve for x
    x = 12,907,625,548.65/126,900.76
  6. Step 6: Final answer
    x = 101,714.33

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1.5x scale

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.