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Finding the Fourth Proportional to 143,998.60, 215,825.10 and 73,841.80

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Solution

The fourth proportional to 143,998.60, 215,825.10 and 73,841.80 is: 110,674.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,998.60 : 215,825.10 = 73,841.80 : x
  2. Step 2: Convert to fraction form
    143,998.60/215,825.10 = 73,841.80/x
  3. Step 3: Cross multiply
    143,998.60x = 215,825.10 × 73,841.80
  4. Step 4: Simplify right side
    143,998.60x = 15,936,913,869.18
  5. Step 5: Solve for x
    x = 15,936,913,869.18/143,998.60
  6. Step 6: Final answer
    x = 110,674.09

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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.