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Finding the Fourth Proportional to 102,885, 154,327.34 and 67,569.28

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Solution

The fourth proportional to 102,885, 154,327.34 and 67,569.28 is: 101,353.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,885 : 154,327.34 = 67,569.28 : x
  2. Step 2: Convert to fraction form
    102,885/154,327.34 = 67,569.28/x
  3. Step 3: Cross multiply
    102,885x = 154,327.34 × 67,569.28
  4. Step 4: Simplify right side
    102,885x = 10,427,787,248.12
  5. Step 5: Solve for x
    x = 10,427,787,248.12/102,885
  6. Step 6: Final answer
    x = 101,353.81

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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.