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Finding the Fourth Proportional to 143,351.59, 215,071.14 and 73,280.11

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Solution

The fourth proportional to 143,351.59, 215,071.14 and 73,280.11 is: 109,942.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,351.59 : 215,071.14 = 73,280.11 : x
  2. Step 2: Convert to fraction form
    143,351.59/215,071.14 = 73,280.11/x
  3. Step 3: Cross multiply
    143,351.59x = 215,071.14 × 73,280.11
  4. Step 4: Simplify right side
    143,351.59x = 15,760,436,797.03
  5. Step 5: Solve for x
    x = 15,760,436,797.03/143,351.59
  6. Step 6: Final answer
    x = 109,942.53

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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.