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Finding the Fourth Proportional to 144,722.08, 217,157.25 and 68,906.42

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Solution

The fourth proportional to 144,722.08, 217,157.25 and 68,906.42 is: 103,394.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,722.08 : 217,157.25 = 68,906.42 : x
  2. Step 2: Convert to fraction form
    144,722.08/217,157.25 = 68,906.42/x
  3. Step 3: Cross multiply
    144,722.08x = 217,157.25 × 68,906.42
  4. Step 4: Simplify right side
    144,722.08x = 14,963,528,674.55
  5. Step 5: Solve for x
    x = 14,963,528,674.55/144,722.08
  6. Step 6: Final answer
    x = 103,394.93

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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.