Home / 120,382.74-166,083.57-77,964.66

Finding the Fourth Proportional to 120,382.74, 166,083.57 and 77,964.66

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Solution

The fourth proportional to 120,382.74, 166,083.57 and 77,964.66 is: 107,562.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,382.74 : 166,083.57 = 77,964.66 : x
  2. Step 2: Convert to fraction form
    120,382.74/166,083.57 = 77,964.66/x
  3. Step 3: Cross multiply
    120,382.74x = 166,083.57 × 77,964.66
  4. Step 4: Simplify right side
    120,382.74x = 12,948,649,066.64
  5. Step 5: Solve for x
    x = 12,948,649,066.64/120,382.74
  6. Step 6: Final answer
    x = 107,562.34

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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.