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Finding the Fourth Proportional to 101,286.36, 139,774.34 and 55,964.20

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Solution

The fourth proportional to 101,286.36, 139,774.34 and 55,964.20 is: 77,230.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,286.36 : 139,774.34 = 55,964.20 : x
  2. Step 2: Convert to fraction form
    101,286.36/139,774.34 = 55,964.20/x
  3. Step 3: Cross multiply
    101,286.36x = 139,774.34 × 55,964.20
  4. Step 4: Simplify right side
    101,286.36x = 7,822,359,118.63
  5. Step 5: Solve for x
    x = 7,822,359,118.63/101,286.36
  6. Step 6: Final answer
    x = 77,230.13

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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.