Home / 101,286.21-139,781.55-55,964.19

Finding the Fourth Proportional to 101,286.21, 139,781.55 and 55,964.19

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Solution

The fourth proportional to 101,286.21, 139,781.55 and 55,964.19 is: 77,234.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,286.21 : 139,781.55 = 55,964.19 : x
  2. Step 2: Convert to fraction form
    101,286.21/139,781.55 = 55,964.19/x
  3. Step 3: Cross multiply
    101,286.21x = 139,781.55 × 55,964.19
  4. Step 4: Simplify right side
    101,286.21x = 7,822,761,222.69
  5. Step 5: Solve for x
    x = 7,822,761,222.69/101,286.21
  6. Step 6: Final answer
    x = 77,234.22

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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.