Home / 126,218.64-189,200.21-81,873.57

Finding the Fourth Proportional to 126,218.64, 189,200.21 and 81,873.57

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Solution

The fourth proportional to 126,218.64, 189,200.21 and 81,873.57 is: 122,727.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,218.64 : 189,200.21 = 81,873.57 : x
  2. Step 2: Convert to fraction form
    126,218.64/189,200.21 = 81,873.57/x
  3. Step 3: Cross multiply
    126,218.64x = 189,200.21 × 81,873.57
  4. Step 4: Simplify right side
    126,218.64x = 15,490,496,228.08
  5. Step 5: Solve for x
    x = 15,490,496,228.08/126,218.64
  6. Step 6: Final answer
    x = 122,727.48

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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.