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Finding the Fourth Proportional to 168,869.94, 253,211.31 and 69,100.08

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Solution

The fourth proportional to 168,869.94, 253,211.31 and 69,100.08 is: 103,611.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,869.94 : 253,211.31 = 69,100.08 : x
  2. Step 2: Convert to fraction form
    168,869.94/253,211.31 = 69,100.08/x
  3. Step 3: Cross multiply
    168,869.94x = 253,211.31 × 69,100.08
  4. Step 4: Simplify right side
    168,869.94x = 17,496,921,777.90
  5. Step 5: Solve for x
    x = 17,496,921,777.90/168,869.94
  6. Step 6: Final answer
    x = 103,611.82

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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.