Home / 221,135.74-305,145.03-125,623.78

Finding the Fourth Proportional to 221,135.74, 305,145.03 and 125,623.78

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Solution

The fourth proportional to 221,135.74, 305,145.03 and 125,623.78 is: 173,348.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,135.74 : 305,145.03 = 125,623.78 : x
  2. Step 2: Convert to fraction form
    221,135.74/305,145.03 = 125,623.78/x
  3. Step 3: Cross multiply
    221,135.74x = 305,145.03 × 125,623.78
  4. Step 4: Simplify right side
    221,135.74x = 38,333,472,116.81
  5. Step 5: Solve for x
    x = 38,333,472,116.81/221,135.74
  6. Step 6: Final answer
    x = 173,348.15

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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.