Home / 212,930.12-319,395.16-55,158.57

Finding the Fourth Proportional to 212,930.12, 319,395.16 and 55,158.57

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Solution

The fourth proportional to 212,930.12, 319,395.16 and 55,158.57 is: 82,737.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,930.12 : 319,395.16 = 55,158.57 : x
  2. Step 2: Convert to fraction form
    212,930.12/319,395.16 = 55,158.57/x
  3. Step 3: Cross multiply
    212,930.12x = 319,395.16 × 55,158.57
  4. Step 4: Simplify right side
    212,930.12x = 17,617,380,290.52
  5. Step 5: Solve for x
    x = 17,617,380,290.52/212,930.12
  6. Step 6: Final answer
    x = 82,737.85

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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.