Home / 213,142.11-319,487.88-70,949.44

Finding the Fourth Proportional to 213,142.11, 319,487.88 and 70,949.44

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Solution

The fourth proportional to 213,142.11, 319,487.88 and 70,949.44 is: 106,349.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,142.11 : 319,487.88 = 70,949.44 : x
  2. Step 2: Convert to fraction form
    213,142.11/319,487.88 = 70,949.44/x
  3. Step 3: Cross multiply
    213,142.11x = 319,487.88 × 70,949.44
  4. Step 4: Simplify right side
    213,142.11x = 22,667,486,172.79
  5. Step 5: Solve for x
    x = 22,667,486,172.79/213,142.11
  6. Step 6: Final answer
    x = 106,349.17

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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.