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Finding the Fourth Proportional to 221,660.96, 305,892.45 and 126,167.63

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Solution

The fourth proportional to 221,660.96, 305,892.45 and 126,167.63 is: 174,111.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,660.96 : 305,892.45 = 126,167.63 : x
  2. Step 2: Convert to fraction form
    221,660.96/305,892.45 = 126,167.63/x
  3. Step 3: Cross multiply
    221,660.96x = 305,892.45 × 126,167.63
  4. Step 4: Simplify right side
    221,660.96x = 38,593,723,921.93
  5. Step 5: Solve for x
    x = 38,593,723,921.93/221,660.96
  6. Step 6: Final answer
    x = 174,111.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.