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Finding the Fourth Proportional to 159,875.54, 220,635.39 and 91,914.51

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Solution

The fourth proportional to 159,875.54, 220,635.39 and 91,914.51 is: 126,846.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,875.54 : 220,635.39 = 91,914.51 : x
  2. Step 2: Convert to fraction form
    159,875.54/220,635.39 = 91,914.51/x
  3. Step 3: Cross multiply
    159,875.54x = 220,635.39 × 91,914.51
  4. Step 4: Simplify right side
    159,875.54x = 20,279,593,760.51
  5. Step 5: Solve for x
    x = 20,279,593,760.51/159,875.54
  6. Step 6: Final answer
    x = 126,846.14

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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.