Home / 126,138.06-189,262.98-66,959.46

Finding the Fourth Proportional to 126,138.06, 189,262.98 and 66,959.46

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Solution

The fourth proportional to 126,138.06, 189,262.98 and 66,959.46 is: 100,468.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,138.06 : 189,262.98 = 66,959.46 : x
  2. Step 2: Convert to fraction form
    126,138.06/189,262.98 = 66,959.46/x
  3. Step 3: Cross multiply
    126,138.06x = 189,262.98 × 66,959.46
  4. Step 4: Simplify right side
    126,138.06x = 12,672,946,938.79
  5. Step 5: Solve for x
    x = 12,672,946,938.79/126,138.06
  6. Step 6: Final answer
    x = 100,468.86

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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.