Home / 120,696.13-166,615.50-82,517.50

Finding the Fourth Proportional to 120,696.13, 166,615.50 and 82,517.50

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Solution

The fourth proportional to 120,696.13, 166,615.50 and 82,517.50 is: 113,911.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,696.13 : 166,615.50 = 82,517.50 : x
  2. Step 2: Convert to fraction form
    120,696.13/166,615.50 = 82,517.50/x
  3. Step 3: Cross multiply
    120,696.13x = 166,615.50 × 82,517.50
  4. Step 4: Simplify right side
    120,696.13x = 13,748,694,521.25
  5. Step 5: Solve for x
    x = 13,748,694,521.25/120,696.13
  6. Step 6: Final answer
    x = 113,911.64

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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.