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Finding the Fourth Proportional to 101,180.70, 139,637.79 and 55,862.82

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Solution

The fourth proportional to 101,180.70, 139,637.79 and 55,862.82 is: 77,095.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,180.70 : 139,637.79 = 55,862.82 : x
  2. Step 2: Convert to fraction form
    101,180.70/139,637.79 = 55,862.82/x
  3. Step 3: Cross multiply
    101,180.70x = 139,637.79 × 55,862.82
  4. Step 4: Simplify right side
    101,180.70x = 7,800,560,727.97
  5. Step 5: Solve for x
    x = 7,800,560,727.97/101,180.70
  6. Step 6: Final answer
    x = 77,095.34

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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.