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Finding the Fourth Proportional to 101,267.11, 139,745.91 and 55,937.79

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Solution

The fourth proportional to 101,267.11, 139,745.91 and 55,937.79 is: 77,192.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,267.11 : 139,745.91 = 55,937.79 : x
  2. Step 2: Convert to fraction form
    101,267.11/139,745.91 = 55,937.79/x
  3. Step 3: Cross multiply
    101,267.11x = 139,745.91 × 55,937.79
  4. Step 4: Simplify right side
    101,267.11x = 7,817,077,366.94
  5. Step 5: Solve for x
    x = 7,817,077,366.94/101,267.11
  6. Step 6: Final answer
    x = 77,192.66

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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.