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Finding the Fourth Proportional to 103,652.25, 155,479.25 and 28,778.24

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Solution

The fourth proportional to 103,652.25, 155,479.25 and 28,778.24 is: 43,167.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,652.25 : 155,479.25 = 28,778.24 : x
  2. Step 2: Convert to fraction form
    103,652.25/155,479.25 = 28,778.24/x
  3. Step 3: Cross multiply
    103,652.25x = 155,479.25 × 28,778.24
  4. Step 4: Simplify right side
    103,652.25x = 4,474,419,171.52
  5. Step 5: Solve for x
    x = 4,474,419,171.52/103,652.25
  6. Step 6: Final answer
    x = 43,167.60

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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.