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Finding the Fourth Proportional to 143,369.40, 215,097.84 and 73,297.92

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Solution

The fourth proportional to 143,369.40, 215,097.84 and 73,297.92 is: 109,969.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,369.40 : 215,097.84 = 73,297.92 : x
  2. Step 2: Convert to fraction form
    143,369.40/215,097.84 = 73,297.92/x
  3. Step 3: Cross multiply
    143,369.40x = 215,097.84 × 73,297.92
  4. Step 4: Simplify right side
    143,369.40x = 15,766,224,268.49
  5. Step 5: Solve for x
    x = 15,766,224,268.49/143,369.40
  6. Step 6: Final answer
    x = 109,969.24

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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.