Home / 117,143.70-161,654.85-66,158.52

Finding the Fourth Proportional to 117,143.70, 161,654.85 and 66,158.52

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Solution

The fourth proportional to 117,143.70, 161,654.85 and 66,158.52 is: 91,296.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,143.70 : 161,654.85 = 66,158.52 : x
  2. Step 2: Convert to fraction form
    117,143.70/161,654.85 = 66,158.52/x
  3. Step 3: Cross multiply
    117,143.70x = 161,654.85 × 66,158.52
  4. Step 4: Simplify right side
    117,143.70x = 10,694,845,626.82
  5. Step 5: Solve for x
    x = 10,694,845,626.82/117,143.70
  6. Step 6: Final answer
    x = 91,296.81

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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.