Home / 221,573.43-305,769.72-120,971.43

Finding the Fourth Proportional to 221,573.43, 305,769.72 and 120,971.43

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Solution

The fourth proportional to 221,573.43, 305,769.72 and 120,971.43 is: 166,939.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,573.43 : 305,769.72 = 120,971.43 : x
  2. Step 2: Convert to fraction form
    221,573.43/305,769.72 = 120,971.43/x
  3. Step 3: Cross multiply
    221,573.43x = 305,769.72 × 120,971.43
  4. Step 4: Simplify right side
    221,573.43x = 36,989,400,279.10
  5. Step 5: Solve for x
    x = 36,989,400,279.10/221,573.43
  6. Step 6: Final answer
    x = 166,939.69

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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.