Home / 84,082.18-126,119.63-20,900.97

Finding the Fourth Proportional to 84,082.18, 126,119.63 and 20,900.97

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Solution

The fourth proportional to 84,082.18, 126,119.63 and 20,900.97 is: 31,350.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,082.18 : 126,119.63 = 20,900.97 : x
  2. Step 2: Convert to fraction form
    84,082.18/126,119.63 = 20,900.97/x
  3. Step 3: Cross multiply
    84,082.18x = 126,119.63 × 20,900.97
  4. Step 4: Simplify right side
    84,082.18x = 2,636,021,867.94
  5. Step 5: Solve for x
    x = 2,636,021,867.94/84,082.18
  6. Step 6: Final answer
    x = 31,350.54

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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.