Home / 275,178.12-379,711.98-161,979

Finding the Fourth Proportional to 275,178.12, 379,711.98 and 161,979

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Solution

The fourth proportional to 275,178.12, 379,711.98 and 161,979 is: 223,511.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,178.12 : 379,711.98 = 161,979 : x
  2. Step 2: Convert to fraction form
    275,178.12/379,711.98 = 161,979/x
  3. Step 3: Cross multiply
    275,178.12x = 379,711.98 × 161,979
  4. Step 4: Simplify right side
    275,178.12x = 61,505,366,808.42
  5. Step 5: Solve for x
    x = 61,505,366,808.42/275,178.12
  6. Step 6: Final answer
    x = 223,511.11

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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.