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Finding the Fourth Proportional to 101,255.80, 139,730.16 and 55,933.08

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Solution

The fourth proportional to 101,255.80, 139,730.16 and 55,933.08 is: 77,186.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,255.80 : 139,730.16 = 55,933.08 : x
  2. Step 2: Convert to fraction form
    101,255.80/139,730.16 = 55,933.08/x
  3. Step 3: Cross multiply
    101,255.80x = 139,730.16 × 55,933.08
  4. Step 4: Simplify right side
    101,255.80x = 7,815,538,217.69
  5. Step 5: Solve for x
    x = 7,815,538,217.69/101,255.80
  6. Step 6: Final answer
    x = 77,186.08

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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.