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Finding the Fourth Proportional to 100,765.80, 151,245.90 and 50,902.20

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Solution

The fourth proportional to 100,765.80, 151,245.90 and 50,902.20 is: 76,402.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,765.80 : 151,245.90 = 50,902.20 : x
  2. Step 2: Convert to fraction form
    100,765.80/151,245.90 = 50,902.20/x
  3. Step 3: Cross multiply
    100,765.80x = 151,245.90 × 50,902.20
  4. Step 4: Simplify right side
    100,765.80x = 7,698,749,050.98
  5. Step 5: Solve for x
    x = 7,698,749,050.98/100,765.80
  6. Step 6: Final answer
    x = 76,402.40

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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.