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Finding the Fourth Proportional to 144,874.40, 217,376.40 and 69,965.60

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Solution

The fourth proportional to 144,874.40, 217,376.40 and 69,965.60 is: 104,979.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,874.40 : 217,376.40 = 69,965.60 : x
  2. Step 2: Convert to fraction form
    144,874.40/217,376.40 = 69,965.60/x
  3. Step 3: Cross multiply
    144,874.40x = 217,376.40 × 69,965.60
  4. Step 4: Simplify right side
    144,874.40x = 15,208,870,251.84
  5. Step 5: Solve for x
    x = 15,208,870,251.84/144,874.40
  6. Step 6: Final answer
    x = 104,979.69

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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.