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Finding the Fourth Proportional to 201,900.65, 278,611.39 and 115,841.39

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Solution

The fourth proportional to 201,900.65, 278,611.39 and 115,841.39 is: 159,854.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,900.65 : 278,611.39 = 115,841.39 : x
  2. Step 2: Convert to fraction form
    201,900.65/278,611.39 = 115,841.39/x
  3. Step 3: Cross multiply
    201,900.65x = 278,611.39 × 115,841.39
  4. Step 4: Simplify right side
    201,900.65x = 32,274,730,687.43
  5. Step 5: Solve for x
    x = 32,274,730,687.43/201,900.65
  6. Step 6: Final answer
    x = 159,854.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.