Home / 109,555.20-164,236.80-74,380.80

Finding the Fourth Proportional to 109,555.20, 164,236.80 and 74,380.80

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Solution

The fourth proportional to 109,555.20, 164,236.80 and 74,380.80 is: 111,506.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,555.20 : 164,236.80 = 74,380.80 : x
  2. Step 2: Convert to fraction form
    109,555.20/164,236.80 = 74,380.80/x
  3. Step 3: Cross multiply
    109,555.20x = 164,236.80 × 74,380.80
  4. Step 4: Simplify right side
    109,555.20x = 12,216,064,573.44
  5. Step 5: Solve for x
    x = 12,216,064,573.44/109,555.20
  6. Step 6: Final answer
    x = 111,506.02

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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.