Home / 84,081.37-126,118.41-20,900.16

Finding the Fourth Proportional to 84,081.37, 126,118.41 and 20,900.16

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Solution

The fourth proportional to 84,081.37, 126,118.41 and 20,900.16 is: 31,349.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,081.37 : 126,118.41 = 20,900.16 : x
  2. Step 2: Convert to fraction form
    84,081.37/126,118.41 = 20,900.16/x
  3. Step 3: Cross multiply
    84,081.37x = 126,118.41 × 20,900.16
  4. Step 4: Simplify right side
    84,081.37x = 2,635,894,212.85
  5. Step 5: Solve for x
    x = 2,635,894,212.85/84,081.37
  6. Step 6: Final answer
    x = 31,349.33

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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.