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Finding the Fourth Proportional to 207,612, 286,504.88 and 118,188

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Solution

The fourth proportional to 207,612, 286,504.88 and 118,188 is: 163,099.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,612 : 286,504.88 = 118,188 : x
  2. Step 2: Convert to fraction form
    207,612/286,504.88 = 118,188/x
  3. Step 3: Cross multiply
    207,612x = 286,504.88 × 118,188
  4. Step 4: Simplify right side
    207,612x = 33,861,438,757.44
  5. Step 5: Solve for x
    x = 33,861,438,757.44/207,612
  6. Step 6: Final answer
    x = 163,099.62

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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.