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Finding the Fourth Proportional to 100,914.60, 151,379.10 and 30,793.80

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Solution

The fourth proportional to 100,914.60, 151,379.10 and 30,793.80 is: 46,192.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,914.60 : 151,379.10 = 30,793.80 : x
  2. Step 2: Convert to fraction form
    100,914.60/151,379.10 = 30,793.80/x
  3. Step 3: Cross multiply
    100,914.60x = 151,379.10 × 30,793.80
  4. Step 4: Simplify right side
    100,914.60x = 4,661,537,729.58
  5. Step 5: Solve for x
    x = 4,661,537,729.58/100,914.60
  6. Step 6: Final answer
    x = 46,192.90

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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.