Home / 120,837.76-166,836.88-75,579.84

Finding the Fourth Proportional to 120,837.76, 166,836.88 and 75,579.84

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Solution

The fourth proportional to 120,837.76, 166,836.88 and 75,579.84 is: 104,350.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,837.76 : 166,836.88 = 75,579.84 : x
  2. Step 2: Convert to fraction form
    120,837.76/166,836.88 = 75,579.84/x
  3. Step 3: Cross multiply
    120,837.76x = 166,836.88 × 75,579.84
  4. Step 4: Simplify right side
    120,837.76x = 12,609,504,696.50
  5. Step 5: Solve for x
    x = 12,609,504,696.50/120,837.76
  6. Step 6: Final answer
    x = 104,350.70

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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.