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Finding the Fourth Proportional to 152,728.79, 229,001.11 and 68,473.71

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Solution

The fourth proportional to 152,728.79, 229,001.11 and 68,473.71 is: 102,669.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,728.79 : 229,001.11 = 68,473.71 : x
  2. Step 2: Convert to fraction form
    152,728.79/229,001.11 = 68,473.71/x
  3. Step 3: Cross multiply
    152,728.79x = 229,001.11 × 68,473.71
  4. Step 4: Simplify right side
    152,728.79x = 15,680,555,424.63
  5. Step 5: Solve for x
    x = 15,680,555,424.63/152,728.79
  6. Step 6: Final answer
    x = 102,669.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.