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Finding the Fourth Proportional to 201,109.84, 301,614.88 and 67,987.20

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Solution

The fourth proportional to 201,109.84, 301,614.88 and 67,987.20 is: 101,963.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,109.84 : 301,614.88 = 67,987.20 : x
  2. Step 2: Convert to fraction form
    201,109.84/301,614.88 = 67,987.20/x
  3. Step 3: Cross multiply
    201,109.84x = 301,614.88 × 67,987.20
  4. Step 4: Simplify right side
    201,109.84x = 20,505,951,169.54
  5. Step 5: Solve for x
    x = 20,505,951,169.54/201,109.84
  6. Step 6: Final answer
    x = 101,963.94

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1.5x scale

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.