Home / 221,100.62-305,119.89-125,612.56

Finding the Fourth Proportional to 221,100.62, 305,119.89 and 125,612.56

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Solution

The fourth proportional to 221,100.62, 305,119.89 and 125,612.56 is: 173,345.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,100.62 : 305,119.89 = 125,612.56 : x
  2. Step 2: Convert to fraction form
    221,100.62/305,119.89 = 125,612.56/x
  3. Step 3: Cross multiply
    221,100.62x = 305,119.89 × 125,612.56
  4. Step 4: Simplify right side
    221,100.62x = 38,326,888,336.16
  5. Step 5: Solve for x
    x = 38,326,888,336.16/221,100.62
  6. Step 6: Final answer
    x = 173,345.91

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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.