Home / 221,400.72-305,529.17-125,905.23

Finding the Fourth Proportional to 221,400.72, 305,529.17 and 125,905.23

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Solution

The fourth proportional to 221,400.72, 305,529.17 and 125,905.23 is: 173,747.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,400.72 : 305,529.17 = 125,905.23 : x
  2. Step 2: Convert to fraction form
    221,400.72/305,529.17 = 125,905.23/x
  3. Step 3: Cross multiply
    221,400.72x = 305,529.17 × 125,905.23
  4. Step 4: Simplify right side
    221,400.72x = 38,467,719,791.03
  5. Step 5: Solve for x
    x = 38,467,719,791.03/221,400.72
  6. Step 6: Final answer
    x = 173,747.04

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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.