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Finding the Fourth Proportional to 103,796.59, 143,089.99 and 73,936.75

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Solution

The fourth proportional to 103,796.59, 143,089.99 and 73,936.75 is: 101,926.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,796.59 : 143,089.99 = 73,936.75 : x
  2. Step 2: Convert to fraction form
    103,796.59/143,089.99 = 73,936.75/x
  3. Step 3: Cross multiply
    103,796.59x = 143,089.99 × 73,936.75
  4. Step 4: Simplify right side
    103,796.59x = 10,579,608,818.13
  5. Step 5: Solve for x
    x = 10,579,608,818.13/103,796.59
  6. Step 6: Final answer
    x = 101,926.36

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1.5x scale

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.