Home / 117,345.11-162,069.91-79,553.75

Finding the Fourth Proportional to 117,345.11, 162,069.91 and 79,553.75

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Solution

The fourth proportional to 117,345.11, 162,069.91 and 79,553.75 is: 109,874.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,345.11 : 162,069.91 = 79,553.75 : x
  2. Step 2: Convert to fraction form
    117,345.11/162,069.91 = 79,553.75/x
  3. Step 3: Cross multiply
    117,345.11x = 162,069.91 × 79,553.75
  4. Step 4: Simplify right side
    117,345.11x = 12,893,268,093.43
  5. Step 5: Solve for x
    x = 12,893,268,093.43/117,345.11
  6. Step 6: Final answer
    x = 109,874.78

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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.