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Finding the Fourth Proportional to 103,464.80, 155,197.20 and 61,474.40

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Solution

The fourth proportional to 103,464.80, 155,197.20 and 61,474.40 is: 92,211.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,464.80 : 155,197.20 = 61,474.40 : x
  2. Step 2: Convert to fraction form
    103,464.80/155,197.20 = 61,474.40/x
  3. Step 3: Cross multiply
    103,464.80x = 155,197.20 × 61,474.40
  4. Step 4: Simplify right side
    103,464.80x = 9,540,654,751.68
  5. Step 5: Solve for x
    x = 9,540,654,751.68/103,464.80
  6. Step 6: Final answer
    x = 92,211.60

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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.