Home / 126,111.41-189,222.84-66,125.56

Finding the Fourth Proportional to 126,111.41, 189,222.84 and 66,125.56

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Solution

The fourth proportional to 126,111.41, 189,222.84 and 66,125.56 is: 99,217.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,111.41 : 189,222.84 = 66,125.56 : x
  2. Step 2: Convert to fraction form
    126,111.41/189,222.84 = 66,125.56/x
  3. Step 3: Cross multiply
    126,111.41x = 189,222.84 × 66,125.56
  4. Step 4: Simplify right side
    126,111.41x = 12,512,466,259.79
  5. Step 5: Solve for x
    x = 12,512,466,259.79/126,111.41
  6. Step 6: Final answer
    x = 99,217.56

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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.