Home / 110,839.89-166,102.65-85,763.21

Finding the Fourth Proportional to 110,839.89, 166,102.65 and 85,763.21

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Solution

The fourth proportional to 110,839.89, 166,102.65 and 85,763.21 is: 128,523.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,839.89 : 166,102.65 = 85,763.21 : x
  2. Step 2: Convert to fraction form
    110,839.89/166,102.65 = 85,763.21/x
  3. Step 3: Cross multiply
    110,839.89x = 166,102.65 × 85,763.21
  4. Step 4: Simplify right side
    110,839.89x = 14,245,495,622.99
  5. Step 5: Solve for x
    x = 14,245,495,622.99/110,839.89
  6. Step 6: Final answer
    x = 128,523.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.