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Finding the Fourth Proportional to 101,266.97, 139,747.74 and 55,947.87

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Solution

The fourth proportional to 101,266.97, 139,747.74 and 55,947.87 is: 77,207.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,266.97 : 139,747.74 = 55,947.87 : x
  2. Step 2: Convert to fraction form
    101,266.97/139,747.74 = 55,947.87/x
  3. Step 3: Cross multiply
    101,266.97x = 139,747.74 × 55,947.87
  4. Step 4: Simplify right side
    101,266.97x = 7,818,588,390.31
  5. Step 5: Solve for x
    x = 7,818,588,390.31/101,266.97
  6. Step 6: Final answer
    x = 77,207.69

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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.