Home / 120,757.52-166,529.28-72,351.62

Finding the Fourth Proportional to 120,757.52, 166,529.28 and 72,351.62

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Solution

The fourth proportional to 120,757.52, 166,529.28 and 72,351.62 is: 99,775.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,757.52 : 166,529.28 = 72,351.62 : x
  2. Step 2: Convert to fraction form
    120,757.52/166,529.28 = 72,351.62/x
  3. Step 3: Cross multiply
    120,757.52x = 166,529.28 × 72,351.62
  4. Step 4: Simplify right side
    120,757.52x = 12,048,663,185.43
  5. Step 5: Solve for x
    x = 12,048,663,185.43/120,757.52
  6. Step 6: Final answer
    x = 99,775.68

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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.