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Finding the Fourth Proportional to 192,721.87, 265,956.51 and 107,839

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Solution

The fourth proportional to 192,721.87, 265,956.51 and 107,839 is: 148,818.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,721.87 : 265,956.51 = 107,839 : x
  2. Step 2: Convert to fraction form
    192,721.87/265,956.51 = 107,839/x
  3. Step 3: Cross multiply
    192,721.87x = 265,956.51 × 107,839
  4. Step 4: Simplify right side
    192,721.87x = 28,680,484,081.89
  5. Step 5: Solve for x
    x = 28,680,484,081.89/192,721.87
  6. Step 6: Final answer
    x = 148,818.00

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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.