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Finding the Fourth Proportional to 102,894.55, 154,236.56 and 69,618.13

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Solution

The fourth proportional to 102,894.55, 154,236.56 and 69,618.13 is: 104,355.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,894.55 : 154,236.56 = 69,618.13 : x
  2. Step 2: Convert to fraction form
    102,894.55/154,236.56 = 69,618.13/x
  3. Step 3: Cross multiply
    102,894.55x = 154,236.56 × 69,618.13
  4. Step 4: Simplify right side
    102,894.55x = 10,737,660,673.29
  5. Step 5: Solve for x
    x = 10,737,660,673.29/102,894.55
  6. Step 6: Final answer
    x = 104,355.97

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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.