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Finding the Fourth Proportional to 199,419.40, 275,199.60 and 108,777.30

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Solution

The fourth proportional to 199,419.40, 275,199.60 and 108,777.30 is: 150,113.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,419.40 : 275,199.60 = 108,777.30 : x
  2. Step 2: Convert to fraction form
    199,419.40/275,199.60 = 108,777.30/x
  3. Step 3: Cross multiply
    199,419.40x = 275,199.60 × 108,777.30
  4. Step 4: Simplify right side
    199,419.40x = 29,935,469,449.08
  5. Step 5: Solve for x
    x = 29,935,469,449.08/199,419.40
  6. Step 6: Final answer
    x = 150,113.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.