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Finding the Fourth Proportional to 147,015, 220,522.50 and 63,909

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Solution

The fourth proportional to 147,015, 220,522.50 and 63,909 is: 95,863.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,015 : 220,522.50 = 63,909 : x
  2. Step 2: Convert to fraction form
    147,015/220,522.50 = 63,909/x
  3. Step 3: Cross multiply
    147,015x = 220,522.50 × 63,909
  4. Step 4: Simplify right side
    147,015x = 14,093,372,452.50
  5. Step 5: Solve for x
    x = 14,093,372,452.50/147,015
  6. Step 6: Final answer
    x = 95,863.50

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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.