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Finding the Fourth Proportional to 102,894.79, 154,236.94 and 69,618.37

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Solution

The fourth proportional to 102,894.79, 154,236.94 and 69,618.37 is: 104,356.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,894.79 : 154,236.94 = 69,618.37 : x
  2. Step 2: Convert to fraction form
    102,894.79/154,236.94 = 69,618.37/x
  3. Step 3: Cross multiply
    102,894.79x = 154,236.94 × 69,618.37
  4. Step 4: Simplify right side
    102,894.79x = 10,737,724,356.59
  5. Step 5: Solve for x
    x = 10,737,724,356.59/102,894.79
  6. Step 6: Final answer
    x = 104,356.35

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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.