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Finding the Fourth Proportional to 102,672.16, 154,013.68 and 28,805.92

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Solution

The fourth proportional to 102,672.16, 154,013.68 and 28,805.92 is: 43,210.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,672.16 : 154,013.68 = 28,805.92 : x
  2. Step 2: Convert to fraction form
    102,672.16/154,013.68 = 28,805.92/x
  3. Step 3: Cross multiply
    102,672.16x = 154,013.68 × 28,805.92
  4. Step 4: Simplify right side
    102,672.16x = 4,436,505,744.99
  5. Step 5: Solve for x
    x = 4,436,505,744.99/102,672.16
  6. Step 6: Final answer
    x = 43,210.41

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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.