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Finding the Fourth Proportional to 208,612.58, 287,884.62 and 113,119.04

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Solution

The fourth proportional to 208,612.58, 287,884.62 and 113,119.04 is: 156,103.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,612.58 : 287,884.62 = 113,119.04 : x
  2. Step 2: Convert to fraction form
    208,612.58/287,884.62 = 113,119.04/x
  3. Step 3: Cross multiply
    208,612.58x = 287,884.62 × 113,119.04
  4. Step 4: Simplify right side
    208,612.58x = 32,565,231,845.16
  5. Step 5: Solve for x
    x = 32,565,231,845.16/208,612.58
  6. Step 6: Final answer
    x = 156,103.87

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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.