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Finding the Fourth Proportional to 103,168.62, 154,749.27 and 28,287.56

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Solution

The fourth proportional to 103,168.62, 154,749.27 and 28,287.56 is: 42,430.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,168.62 : 154,749.27 = 28,287.56 : x
  2. Step 2: Convert to fraction form
    103,168.62/154,749.27 = 28,287.56/x
  3. Step 3: Cross multiply
    103,168.62x = 154,749.27 × 28,287.56
  4. Step 4: Simplify right side
    103,168.62x = 4,377,479,260.08
  5. Step 5: Solve for x
    x = 4,377,479,260.08/103,168.62
  6. Step 6: Final answer
    x = 42,430.34

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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.