Home / 68,152.16-102,231.72-20,763.56

Finding the Fourth Proportional to 68,152.16, 102,231.72 and 20,763.56

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Solution

The fourth proportional to 68,152.16, 102,231.72 and 20,763.56 is: 31,146.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,152.16 : 102,231.72 = 20,763.56 : x
  2. Step 2: Convert to fraction form
    68,152.16/102,231.72 = 20,763.56/x
  3. Step 3: Cross multiply
    68,152.16x = 102,231.72 × 20,763.56
  4. Step 4: Simplify right side
    68,152.16x = 2,122,694,707.70
  5. Step 5: Solve for x
    x = 2,122,694,707.70/68,152.16
  6. Step 6: Final answer
    x = 31,146.40

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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.