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Finding the Fourth Proportional to 103,763.20, 155,644.80 and 33,641.60

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Solution

The fourth proportional to 103,763.20, 155,644.80 and 33,641.60 is: 50,462.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,763.20 : 155,644.80 = 33,641.60 : x
  2. Step 2: Convert to fraction form
    103,763.20/155,644.80 = 33,641.60/x
  3. Step 3: Cross multiply
    103,763.20x = 155,644.80 × 33,641.60
  4. Step 4: Simplify right side
    103,763.20x = 5,236,140,103.68
  5. Step 5: Solve for x
    x = 5,236,140,103.68/103,763.20
  6. Step 6: Final answer
    x = 50,462.40

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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.