Home / 120,825.06-166,740.64-66,379.52

Finding the Fourth Proportional to 120,825.06, 166,740.64 and 66,379.52

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Solution

The fourth proportional to 120,825.06, 166,740.64 and 66,379.52 is: 91,604.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,825.06 : 166,740.64 = 66,379.52 : x
  2. Step 2: Convert to fraction form
    120,825.06/166,740.64 = 66,379.52/x
  3. Step 3: Cross multiply
    120,825.06x = 166,740.64 × 66,379.52
  4. Step 4: Simplify right side
    120,825.06x = 11,068,163,647.69
  5. Step 5: Solve for x
    x = 11,068,163,647.69/120,825.06
  6. Step 6: Final answer
    x = 91,604.87

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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.