Home / 221,138.48-305,171.19-125,645.30

Finding the Fourth Proportional to 221,138.48, 305,171.19 and 125,645.30

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Solution

The fourth proportional to 221,138.48, 305,171.19 and 125,645.30 is: 173,390.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,138.48 : 305,171.19 = 125,645.30 : x
  2. Step 2: Convert to fraction form
    221,138.48/305,171.19 = 125,645.30/x
  3. Step 3: Cross multiply
    221,138.48x = 305,171.19 × 125,645.30
  4. Step 4: Simplify right side
    221,138.48x = 38,343,325,718.91
  5. Step 5: Solve for x
    x = 38,343,325,718.91/221,138.48
  6. Step 6: Final answer
    x = 173,390.56

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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.