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Finding the Fourth Proportional to 100,319.08, 150,459.66 and 50,385.88

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Solution

The fourth proportional to 100,319.08, 150,459.66 and 50,385.88 is: 75,569.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,319.08 : 150,459.66 = 50,385.88 : x
  2. Step 2: Convert to fraction form
    100,319.08/150,459.66 = 50,385.88/x
  3. Step 3: Cross multiply
    100,319.08x = 150,459.66 × 50,385.88
  4. Step 4: Simplify right side
    100,319.08x = 7,581,042,373.60
  5. Step 5: Solve for x
    x = 7,581,042,373.60/100,319.08
  6. Step 6: Final answer
    x = 75,569.30

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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.