Home / 212,998.68-319,498.02-72,758.52

Finding the Fourth Proportional to 212,998.68, 319,498.02 and 72,758.52

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Solution

The fourth proportional to 212,998.68, 319,498.02 and 72,758.52 is: 109,137.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,998.68 : 319,498.02 = 72,758.52 : x
  2. Step 2: Convert to fraction form
    212,998.68/319,498.02 = 72,758.52/x
  3. Step 3: Cross multiply
    212,998.68x = 319,498.02 × 72,758.52
  4. Step 4: Simplify right side
    212,998.68x = 23,246,203,078.13
  5. Step 5: Solve for x
    x = 23,246,203,078.13/212,998.68
  6. Step 6: Final answer
    x = 109,137.78

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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.