Home / 126,104.79-189,212.89-66,118.92

Finding the Fourth Proportional to 126,104.79, 189,212.89 and 66,118.92

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Solution

The fourth proportional to 126,104.79, 189,212.89 and 66,118.92 is: 99,207.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,104.79 : 189,212.89 = 66,118.92 : x
  2. Step 2: Convert to fraction form
    126,104.79/189,212.89 = 66,118.92/x
  3. Step 3: Cross multiply
    126,104.79x = 189,212.89 × 66,118.92
  4. Step 4: Simplify right side
    126,104.79x = 12,510,551,936.88
  5. Step 5: Solve for x
    x = 12,510,551,936.88/126,104.79
  6. Step 6: Final answer
    x = 99,207.59

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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.