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Finding the Fourth Proportional to 168,821.46, 253,138.69 and 69,051.71

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Solution

The fourth proportional to 168,821.46, 253,138.69 and 69,051.71 is: 103,539.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,821.46 : 253,138.69 = 69,051.71 : x
  2. Step 2: Convert to fraction form
    168,821.46/253,138.69 = 69,051.71/x
  3. Step 3: Cross multiply
    168,821.46x = 253,138.69 × 69,051.71
  4. Step 4: Simplify right side
    168,821.46x = 17,479,659,411.66
  5. Step 5: Solve for x
    x = 17,479,659,411.66/168,821.46
  6. Step 6: Final answer
    x = 103,539.32

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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.