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Finding the Fourth Proportional to 138,710.44, 208,074.30 and 55,593.64

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Solution

The fourth proportional to 138,710.44, 208,074.30 and 55,593.64 is: 83,393.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,710.44 : 208,074.30 = 55,593.64 : x
  2. Step 2: Convert to fraction form
    138,710.44/208,074.30 = 55,593.64/x
  3. Step 3: Cross multiply
    138,710.44x = 208,074.30 × 55,593.64
  4. Step 4: Simplify right side
    138,710.44x = 11,567,607,727.45
  5. Step 5: Solve for x
    x = 11,567,607,727.45/138,710.44
  6. Step 6: Final answer
    x = 83,393.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.