Home / 188,721.89-260,436.21-102,680.91

Finding the Fourth Proportional to 188,721.89, 260,436.21 and 102,680.91

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Solution

The fourth proportional to 188,721.89, 260,436.21 and 102,680.91 is: 141,699.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,721.89 : 260,436.21 = 102,680.91 : x
  2. Step 2: Convert to fraction form
    188,721.89/260,436.21 = 102,680.91/x
  3. Step 3: Cross multiply
    188,721.89x = 260,436.21 × 102,680.91
  4. Step 4: Simplify right side
    188,721.89x = 26,741,828,401.44
  5. Step 5: Solve for x
    x = 26,741,828,401.44/188,721.89
  6. Step 6: Final answer
    x = 141,699.66

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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.