Home / 221,141.34-305,173.98-125,640.72

Finding the Fourth Proportional to 221,141.34, 305,173.98 and 125,640.72

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Solution

The fourth proportional to 221,141.34, 305,173.98 and 125,640.72 is: 173,383.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,141.34 : 305,173.98 = 125,640.72 : x
  2. Step 2: Convert to fraction form
    221,141.34/305,173.98 = 125,640.72/x
  3. Step 3: Cross multiply
    221,141.34x = 305,173.98 × 125,640.72
  4. Step 4: Simplify right side
    221,141.34x = 38,342,278,572.47
  5. Step 5: Solve for x
    x = 38,342,278,572.47/221,141.34
  6. Step 6: Final answer
    x = 173,383.59

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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.