Home / 165,676.32-248,335.74-81,338.40

Finding the Fourth Proportional to 165,676.32, 248,335.74 and 81,338.40

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Solution

The fourth proportional to 165,676.32, 248,335.74 and 81,338.40 is: 121,919.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,676.32 : 248,335.74 = 81,338.40 : x
  2. Step 2: Convert to fraction form
    165,676.32/248,335.74 = 81,338.40/x
  3. Step 3: Cross multiply
    165,676.32x = 248,335.74 × 81,338.40
  4. Step 4: Simplify right side
    165,676.32x = 20,199,231,754.42
  5. Step 5: Solve for x
    x = 20,199,231,754.42/165,676.32
  6. Step 6: Final answer
    x = 121,919.85

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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.