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Finding the Fourth Proportional to 201,487.90, 302,231.85 and 83,119.90

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Solution

The fourth proportional to 201,487.90, 302,231.85 and 83,119.90 is: 124,679.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,487.90 : 302,231.85 = 83,119.90 : x
  2. Step 2: Convert to fraction form
    201,487.90/302,231.85 = 83,119.90/x
  3. Step 3: Cross multiply
    201,487.90x = 302,231.85 × 83,119.90
  4. Step 4: Simplify right side
    201,487.90x = 25,121,481,148.82
  5. Step 5: Solve for x
    x = 25,121,481,148.82/201,487.90
  6. Step 6: Final answer
    x = 124,679.85

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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.