Home / 126,191.76-189,100.63-51,220.68

Finding the Fourth Proportional to 126,191.76, 189,100.63 and 51,220.68

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Solution

The fourth proportional to 126,191.76, 189,100.63 and 51,220.68 is: 76,755.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,191.76 : 189,100.63 = 51,220.68 : x
  2. Step 2: Convert to fraction form
    126,191.76/189,100.63 = 51,220.68/x
  3. Step 3: Cross multiply
    126,191.76x = 189,100.63 × 51,220.68
  4. Step 4: Simplify right side
    126,191.76x = 9,685,862,857.03
  5. Step 5: Solve for x
    x = 9,685,862,857.03/126,191.76
  6. Step 6: Final answer
    x = 76,755.11

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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.