Home / 212,845.42-319,344.46-91,214.92

Finding the Fourth Proportional to 212,845.42, 319,344.46 and 91,214.92

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Solution

The fourth proportional to 212,845.42, 319,344.46 and 91,214.92 is: 136,855.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,845.42 : 319,344.46 = 91,214.92 : x
  2. Step 2: Convert to fraction form
    212,845.42/319,344.46 = 91,214.92/x
  3. Step 3: Cross multiply
    212,845.42x = 319,344.46 × 91,214.92
  4. Step 4: Simplify right side
    212,845.42x = 29,128,979,371.34
  5. Step 5: Solve for x
    x = 29,128,979,371.34/212,845.42
  6. Step 6: Final answer
    x = 136,855.09

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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.