Home / 126,219.14-189,200.96-81,874.07

Finding the Fourth Proportional to 126,219.14, 189,200.96 and 81,874.07

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Solution

The fourth proportional to 126,219.14, 189,200.96 and 81,874.07 is: 122,728.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,219.14 : 189,200.96 = 81,874.07 : x
  2. Step 2: Convert to fraction form
    126,219.14/189,200.96 = 81,874.07/x
  3. Step 3: Cross multiply
    126,219.14x = 189,200.96 × 81,874.07
  4. Step 4: Simplify right side
    126,219.14x = 15,490,652,233.74
  5. Step 5: Solve for x
    x = 15,490,652,233.74/126,219.14
  6. Step 6: Final answer
    x = 122,728.23

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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.