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Finding the Fourth Proportional to 159,736.92, 220,447.02 and 91,775.64

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Solution

The fourth proportional to 159,736.92, 220,447.02 and 91,775.64 is: 126,656.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,736.92 : 220,447.02 = 91,775.64 : x
  2. Step 2: Convert to fraction form
    159,736.92/220,447.02 = 91,775.64/x
  3. Step 3: Cross multiply
    159,736.92x = 220,447.02 × 91,775.64
  4. Step 4: Simplify right side
    159,736.92x = 20,231,666,346.59
  5. Step 5: Solve for x
    x = 20,231,666,346.59/159,736.92
  6. Step 6: Final answer
    x = 126,656.17

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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.