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Finding the Fourth Proportional to 168,980.95, 253,380.51 and 67,728.19

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Solution

The fourth proportional to 168,980.95, 253,380.51 and 67,728.19 is: 101,555.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,980.95 : 253,380.51 = 67,728.19 : x
  2. Step 2: Convert to fraction form
    168,980.95/253,380.51 = 67,728.19/x
  3. Step 3: Cross multiply
    168,980.95x = 253,380.51 × 67,728.19
  4. Step 4: Simplify right side
    168,980.95x = 17,161,004,393.45
  5. Step 5: Solve for x
    x = 17,161,004,393.45/168,980.95
  6. Step 6: Final answer
    x = 101,555.85

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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.