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Finding the Fourth Proportional to 201,881.30, 302,712.60 and 83,418.80

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Solution

The fourth proportional to 201,881.30, 302,712.60 and 83,418.80 is: 125,083.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,881.30 : 302,712.60 = 83,418.80 : x
  2. Step 2: Convert to fraction form
    201,881.30/302,712.60 = 83,418.80/x
  3. Step 3: Cross multiply
    201,881.30x = 302,712.60 × 83,418.80
  4. Step 4: Simplify right side
    201,881.30x = 25,251,921,836.88
  5. Step 5: Solve for x
    x = 25,251,921,836.88/201,881.30
  6. Step 6: Final answer
    x = 125,083.02

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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.