Home / 101,021.05-139,351.98-63,229.69

Finding the Fourth Proportional to 101,021.05, 139,351.98 and 63,229.69

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Solution

The fourth proportional to 101,021.05, 139,351.98 and 63,229.69 is: 87,221.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,021.05 : 139,351.98 = 63,229.69 : x
  2. Step 2: Convert to fraction form
    101,021.05/139,351.98 = 63,229.69/x
  3. Step 3: Cross multiply
    101,021.05x = 139,351.98 × 63,229.69
  4. Step 4: Simplify right side
    101,021.05x = 8,811,182,496.29
  5. Step 5: Solve for x
    x = 8,811,182,496.29/101,021.05
  6. Step 6: Final answer
    x = 87,221.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.