Home / 117,342.11-162,065.78-79,550.75

Finding the Fourth Proportional to 117,342.11, 162,065.78 and 79,550.75

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Solution

The fourth proportional to 117,342.11, 162,065.78 and 79,550.75 is: 109,870.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,342.11 : 162,065.78 = 79,550.75 : x
  2. Step 2: Convert to fraction form
    117,342.11/162,065.78 = 79,550.75/x
  3. Step 3: Cross multiply
    117,342.11x = 162,065.78 × 79,550.75
  4. Step 4: Simplify right side
    117,342.11x = 12,892,453,140.25
  5. Step 5: Solve for x
    x = 12,892,453,140.25/117,342.11
  6. Step 6: Final answer
    x = 109,870.65

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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.