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Finding the Fourth Proportional to 201,902.30, 302,744.10 and 83,439.80

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Solution

The fourth proportional to 201,902.30, 302,744.10 and 83,439.80 is: 125,114.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,902.30 : 302,744.10 = 83,439.80 : x
  2. Step 2: Convert to fraction form
    201,902.30/302,744.10 = 83,439.80/x
  3. Step 3: Cross multiply
    201,902.30x = 302,744.10 × 83,439.80
  4. Step 4: Simplify right side
    201,902.30x = 25,260,907,155.18
  5. Step 5: Solve for x
    x = 25,260,907,155.18/201,902.30
  6. Step 6: Final answer
    x = 125,114.51

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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.