Home / 141,298.28-211,775.26-78,115.88

Finding the Fourth Proportional to 141,298.28, 211,775.26 and 78,115.88

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Solution

The fourth proportional to 141,298.28, 211,775.26 and 78,115.88 is: 117,078.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,298.28 : 211,775.26 = 78,115.88 : x
  2. Step 2: Convert to fraction form
    141,298.28/211,775.26 = 78,115.88/x
  3. Step 3: Cross multiply
    141,298.28x = 211,775.26 × 78,115.88
  4. Step 4: Simplify right side
    141,298.28x = 16,543,010,797.13
  5. Step 5: Solve for x
    x = 16,543,010,797.13/141,298.28
  6. Step 6: Final answer
    x = 117,078.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.