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Finding the Fourth Proportional to 101,286.10, 139,774.25 and 55,964.10

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Solution

The fourth proportional to 101,286.10, 139,774.25 and 55,964.10 is: 77,230.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,286.10 : 139,774.25 = 55,964.10 : x
  2. Step 2: Convert to fraction form
    101,286.10/139,774.25 = 55,964.10/x
  3. Step 3: Cross multiply
    101,286.10x = 139,774.25 × 55,964.10
  4. Step 4: Simplify right side
    101,286.10x = 7,822,340,104.43
  5. Step 5: Solve for x
    x = 7,822,340,104.43/101,286.10
  6. Step 6: Final answer
    x = 77,230.14

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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.