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Finding the Fourth Proportional to 144,620.70, 217,449.45 and 121,811.10

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Solution

The fourth proportional to 144,620.70, 217,449.45 and 121,811.10 is: 183,153.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,620.70 : 217,449.45 = 121,811.10 : x
  2. Step 2: Convert to fraction form
    144,620.70/217,449.45 = 121,811.10/x
  3. Step 3: Cross multiply
    144,620.70x = 217,449.45 × 121,811.10
  4. Step 4: Simplify right side
    144,620.70x = 26,487,756,698.90
  5. Step 5: Solve for x
    x = 26,487,756,698.90/144,620.70
  6. Step 6: Final answer
    x = 183,153.29

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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.