Home / 101,286.30-139,778.55-63,581.34

Finding the Fourth Proportional to 101,286.30, 139,778.55 and 63,581.34

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Solution

The fourth proportional to 101,286.30, 139,778.55 and 63,581.34 is: 87,744.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,286.30 : 139,778.55 = 63,581.34 : x
  2. Step 2: Convert to fraction form
    101,286.30/139,778.55 = 63,581.34/x
  3. Step 3: Cross multiply
    101,286.30x = 139,778.55 × 63,581.34
  4. Step 4: Simplify right side
    101,286.30x = 8,887,307,512.26
  5. Step 5: Solve for x
    x = 8,887,307,512.26/101,286.30
  6. Step 6: Final answer
    x = 87,744.42

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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.