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Finding the Fourth Proportional to 202,181.05, 278,919.57 and 117,248.86

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Solution

The fourth proportional to 202,181.05, 278,919.57 and 117,248.86 is: 161,751.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,181.05 : 278,919.57 = 117,248.86 : x
  2. Step 2: Convert to fraction form
    202,181.05/278,919.57 = 117,248.86/x
  3. Step 3: Cross multiply
    202,181.05x = 278,919.57 × 117,248.86
  4. Step 4: Simplify right side
    202,181.05x = 32,703,001,614.19
  5. Step 5: Solve for x
    x = 32,703,001,614.19/202,181.05
  6. Step 6: Final answer
    x = 161,751.07

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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.