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Finding the Fourth Proportional to 201,110.84, 301,616.38 and 67,988.20

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Solution

The fourth proportional to 201,110.84, 301,616.38 and 67,988.20 is: 101,965.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,110.84 : 301,616.38 = 67,988.20 : x
  2. Step 2: Convert to fraction form
    201,110.84/301,616.38 = 67,988.20/x
  3. Step 3: Cross multiply
    201,110.84x = 301,616.38 × 67,988.20
  4. Step 4: Simplify right side
    201,110.84x = 20,506,354,766.72
  5. Step 5: Solve for x
    x = 20,506,354,766.72/201,110.84
  6. Step 6: Final answer
    x = 101,965.44

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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.