Home / 113,727.92-170,739.70-87,451.11

Finding the Fourth Proportional to 113,727.92, 170,739.70 and 87,451.11

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Solution

The fourth proportional to 113,727.92, 170,739.70 and 87,451.11 is: 131,290.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,727.92 : 170,739.70 = 87,451.11 : x
  2. Step 2: Convert to fraction form
    113,727.92/170,739.70 = 87,451.11/x
  3. Step 3: Cross multiply
    113,727.92x = 170,739.70 × 87,451.11
  4. Step 4: Simplify right side
    113,727.92x = 14,931,376,067.44
  5. Step 5: Solve for x
    x = 14,931,376,067.44/113,727.92
  6. Step 6: Final answer
    x = 131,290.34

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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.