Home / 103,940.30-155,521.20-74,023.70

Finding the Fourth Proportional to 103,940.30, 155,521.20 and 74,023.70

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Solution

The fourth proportional to 103,940.30, 155,521.20 and 74,023.70 is: 110,758.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,940.30 : 155,521.20 = 74,023.70 : x
  2. Step 2: Convert to fraction form
    103,940.30/155,521.20 = 74,023.70/x
  3. Step 3: Cross multiply
    103,940.30x = 155,521.20 × 74,023.70
  4. Step 4: Simplify right side
    103,940.30x = 11,512,254,652.44
  5. Step 5: Solve for x
    x = 11,512,254,652.44/103,940.30
  6. Step 6: Final answer
    x = 110,758.34

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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.