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Finding the Fourth Proportional to 199,346.60, 299,135.10 and 74,700.20

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Solution

The fourth proportional to 199,346.60, 299,135.10 and 74,700.20 is: 112,093.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,346.60 : 299,135.10 = 74,700.20 : x
  2. Step 2: Convert to fraction form
    199,346.60/299,135.10 = 74,700.20/x
  3. Step 3: Cross multiply
    199,346.60x = 299,135.10 × 74,700.20
  4. Step 4: Simplify right side
    199,346.60x = 22,345,451,797.02
  5. Step 5: Solve for x
    x = 22,345,451,797.02/199,346.60
  6. Step 6: Final answer
    x = 112,093.47

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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.