Home / 107,121.78-147,825.54-61,799.86

Finding the Fourth Proportional to 107,121.78, 147,825.54 and 61,799.86

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Solution

The fourth proportional to 107,121.78, 147,825.54 and 61,799.86 is: 85,282.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,121.78 : 147,825.54 = 61,799.86 : x
  2. Step 2: Convert to fraction form
    107,121.78/147,825.54 = 61,799.86/x
  3. Step 3: Cross multiply
    107,121.78x = 147,825.54 × 61,799.86
  4. Step 4: Simplify right side
    107,121.78x = 9,135,597,676.42
  5. Step 5: Solve for x
    x = 9,135,597,676.42/107,121.78
  6. Step 6: Final answer
    x = 85,282.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.