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Finding the Fourth Proportional to 101,286.76, 139,768.54 and 55,964.24

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Solution

The fourth proportional to 101,286.76, 139,768.54 and 55,964.24 is: 77,226.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,286.76 : 139,768.54 = 55,964.24 : x
  2. Step 2: Convert to fraction form
    101,286.76/139,768.54 = 55,964.24/x
  3. Step 3: Cross multiply
    101,286.76x = 139,768.54 × 55,964.24
  4. Step 4: Simplify right side
    101,286.76x = 7,822,040,117.01
  5. Step 5: Solve for x
    x = 7,822,040,117.01/101,286.76
  6. Step 6: Final answer
    x = 77,226.68

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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.