Home / 213,145.45-319,600.62-86,753.25

Finding the Fourth Proportional to 213,145.45, 319,600.62 and 86,753.25

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Solution

The fourth proportional to 213,145.45, 319,600.62 and 86,753.25 is: 130,082.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,145.45 : 319,600.62 = 86,753.25 : x
  2. Step 2: Convert to fraction form
    213,145.45/319,600.62 = 86,753.25/x
  3. Step 3: Cross multiply
    213,145.45x = 319,600.62 × 86,753.25
  4. Step 4: Simplify right side
    213,145.45x = 27,726,392,487.02
  5. Step 5: Solve for x
    x = 27,726,392,487.02/213,145.45
  6. Step 6: Final answer
    x = 130,082.03

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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.