Home / 84,081.43-126,118.50-20,900.22

Finding the Fourth Proportional to 84,081.43, 126,118.50 and 20,900.22

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Solution

The fourth proportional to 84,081.43, 126,118.50 and 20,900.22 is: 31,349.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,081.43 : 126,118.50 = 20,900.22 : x
  2. Step 2: Convert to fraction form
    84,081.43/126,118.50 = 20,900.22/x
  3. Step 3: Cross multiply
    84,081.43x = 126,118.50 × 20,900.22
  4. Step 4: Simplify right side
    84,081.43x = 2,635,904,396.07
  5. Step 5: Solve for x
    x = 2,635,904,396.07/84,081.43
  6. Step 6: Final answer
    x = 31,349.42

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1.5x scale

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.