Home / 117,305.44-161,879.52-66,317.40

Finding the Fourth Proportional to 117,305.44, 161,879.52 and 66,317.40

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Solution

The fourth proportional to 117,305.44, 161,879.52 and 66,317.40 is: 91,516.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,305.44 : 161,879.52 = 66,317.40 : x
  2. Step 2: Convert to fraction form
    117,305.44/161,879.52 = 66,317.40/x
  3. Step 3: Cross multiply
    117,305.44x = 161,879.52 × 66,317.40
  4. Step 4: Simplify right side
    117,305.44x = 10,735,428,879.65
  5. Step 5: Solve for x
    x = 10,735,428,879.65/117,305.44
  6. Step 6: Final answer
    x = 91,516.89

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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.