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Finding the Fourth Proportional to 103,269.92, 154,902.98 and 28,389.76

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Solution

The fourth proportional to 103,269.92, 154,902.98 and 28,389.76 is: 42,584.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,269.92 : 154,902.98 = 28,389.76 : x
  2. Step 2: Convert to fraction form
    103,269.92/154,902.98 = 28,389.76/x
  3. Step 3: Cross multiply
    103,269.92x = 154,902.98 × 28,389.76
  4. Step 4: Simplify right side
    103,269.92x = 4,397,658,109.20
  5. Step 5: Solve for x
    x = 4,397,658,109.20/103,269.92
  6. Step 6: Final answer
    x = 42,584.12

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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.