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Finding the Fourth Proportional to 154,502.82, 213,235.49 and 111,621.03

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Solution

The fourth proportional to 154,502.82, 213,235.49 and 111,621.03 is: 154,052.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,502.82 : 213,235.49 = 111,621.03 : x
  2. Step 2: Convert to fraction form
    154,502.82/213,235.49 = 111,621.03/x
  3. Step 3: Cross multiply
    154,502.82x = 213,235.49 × 111,621.03
  4. Step 4: Simplify right side
    154,502.82x = 23,801,564,468.25
  5. Step 5: Solve for x
    x = 23,801,564,468.25/154,502.82
  6. Step 6: Final answer
    x = 154,052.62

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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.