Home / 221,134.74-305,143.65-125,622.78

Finding the Fourth Proportional to 221,134.74, 305,143.65 and 125,622.78

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Solution

The fourth proportional to 221,134.74, 305,143.65 and 125,622.78 is: 173,346.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,134.74 : 305,143.65 = 125,622.78 : x
  2. Step 2: Convert to fraction form
    221,134.74/305,143.65 = 125,622.78/x
  3. Step 3: Cross multiply
    221,134.74x = 305,143.65 × 125,622.78
  4. Step 4: Simplify right side
    221,134.74x = 38,332,993,612.35
  5. Step 5: Solve for x
    x = 38,332,993,612.35/221,134.74
  6. Step 6: Final answer
    x = 173,346.77

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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.