Home / 137,654.46-206,149.39-78,310.22

Finding the Fourth Proportional to 137,654.46, 206,149.39 and 78,310.22

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Solution

The fourth proportional to 137,654.46, 206,149.39 and 78,310.22 is: 117,276.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,654.46 : 206,149.39 = 78,310.22 : x
  2. Step 2: Convert to fraction form
    137,654.46/206,149.39 = 78,310.22/x
  3. Step 3: Cross multiply
    137,654.46x = 206,149.39 × 78,310.22
  4. Step 4: Simplify right side
    137,654.46x = 16,143,602,857.24
  5. Step 5: Solve for x
    x = 16,143,602,857.24/137,654.46
  6. Step 6: Final answer
    x = 117,276.28

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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.