Home / 123,379.43-170,264.16-66,790.81

Finding the Fourth Proportional to 123,379.43, 170,264.16 and 66,790.81

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Solution

The fourth proportional to 123,379.43, 170,264.16 and 66,790.81 is: 92,171.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,379.43 : 170,264.16 = 66,790.81 : x
  2. Step 2: Convert to fraction form
    123,379.43/170,264.16 = 66,790.81/x
  3. Step 3: Cross multiply
    123,379.43x = 170,264.16 × 66,790.81
  4. Step 4: Simplify right side
    123,379.43x = 11,372,079,975.09
  5. Step 5: Solve for x
    x = 11,372,079,975.09/123,379.43
  6. Step 6: Final answer
    x = 92,171.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.