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Finding the Fourth Proportional to 170,607.90, 255,944.64 and 65,418.66

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Solution

The fourth proportional to 170,607.90, 255,944.64 and 65,418.66 is: 98,140.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,607.90 : 255,944.64 = 65,418.66 : x
  2. Step 2: Convert to fraction form
    170,607.90/255,944.64 = 65,418.66/x
  3. Step 3: Cross multiply
    170,607.90x = 255,944.64 × 65,418.66
  4. Step 4: Simplify right side
    170,607.90x = 16,743,555,382.98
  5. Step 5: Solve for x
    x = 16,743,555,382.98/170,607.90
  6. Step 6: Final answer
    x = 98,140.56

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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.