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Finding the Fourth Proportional to 101,269.21, 139,751.05 and 55,947.20

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Solution

The fourth proportional to 101,269.21, 139,751.05 and 55,947.20 is: 77,206.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,269.21 : 139,751.05 = 55,947.20 : x
  2. Step 2: Convert to fraction form
    101,269.21/139,751.05 = 55,947.20/x
  3. Step 3: Cross multiply
    101,269.21x = 139,751.05 × 55,947.20
  4. Step 4: Simplify right side
    101,269.21x = 7,818,679,245.80
  5. Step 5: Solve for x
    x = 7,818,679,245.80/101,269.21
  6. Step 6: Final answer
    x = 77,206.88

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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.