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Finding the Fourth Proportional to 199,561.08, 299,253.78 and 74,814.60

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Solution

The fourth proportional to 199,561.08, 299,253.78 and 74,814.60 is: 112,188.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,561.08 : 299,253.78 = 74,814.60 : x
  2. Step 2: Convert to fraction form
    199,561.08/299,253.78 = 74,814.60/x
  3. Step 3: Cross multiply
    199,561.08x = 299,253.78 × 74,814.60
  4. Step 4: Simplify right side
    199,561.08x = 22,388,551,849.19
  5. Step 5: Solve for x
    x = 22,388,551,849.19/199,561.08
  6. Step 6: Final answer
    x = 112,188.97

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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.