Home / 117,120.08-161,583.72-66,789.92

Finding the Fourth Proportional to 117,120.08, 161,583.72 and 66,789.92

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Solution

The fourth proportional to 117,120.08, 161,583.72 and 66,789.92 is: 92,146.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,120.08 : 161,583.72 = 66,789.92 : x
  2. Step 2: Convert to fraction form
    117,120.08/161,583.72 = 66,789.92/x
  3. Step 3: Cross multiply
    117,120.08x = 161,583.72 × 66,789.92
  4. Step 4: Simplify right side
    117,120.08x = 10,792,163,732.10
  5. Step 5: Solve for x
    x = 10,792,163,732.10/117,120.08
  6. Step 6: Final answer
    x = 92,146.14

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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.