Home / 117,821.40-162,540.64-79,568.52

Finding the Fourth Proportional to 117,821.40, 162,540.64 and 79,568.52

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Solution

The fourth proportional to 117,821.40, 162,540.64 and 79,568.52 is: 109,768.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,821.40 : 162,540.64 = 79,568.52 : x
  2. Step 2: Convert to fraction form
    117,821.40/162,540.64 = 79,568.52/x
  3. Step 3: Cross multiply
    117,821.40x = 162,540.64 × 79,568.52
  4. Step 4: Simplify right side
    117,821.40x = 12,933,118,164.65
  5. Step 5: Solve for x
    x = 12,933,118,164.65/117,821.40
  6. Step 6: Final answer
    x = 109,768.84

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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.