Home / 159,415.38-219,974.12-91,428.84

Finding the Fourth Proportional to 159,415.38, 219,974.12 and 91,428.84

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Solution

The fourth proportional to 159,415.38, 219,974.12 and 91,428.84 is: 126,160.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,415.38 : 219,974.12 = 91,428.84 : x
  2. Step 2: Convert to fraction form
    159,415.38/219,974.12 = 91,428.84/x
  3. Step 3: Cross multiply
    159,415.38x = 219,974.12 × 91,428.84
  4. Step 4: Simplify right side
    159,415.38x = 20,111,978,621.62
  5. Step 5: Solve for x
    x = 20,111,978,621.62/159,415.38
  6. Step 6: Final answer
    x = 126,160.84

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1.5x scale

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.