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Finding the Fourth Proportional to 143,682.48, 215,636.08 and 99,619.60

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Solution

The fourth proportional to 143,682.48, 215,636.08 and 99,619.60 is: 149,507.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,682.48 : 215,636.08 = 99,619.60 : x
  2. Step 2: Convert to fraction form
    143,682.48/215,636.08 = 99,619.60/x
  3. Step 3: Cross multiply
    143,682.48x = 215,636.08 × 99,619.60
  4. Step 4: Simplify right side
    143,682.48x = 21,481,580,035.17
  5. Step 5: Solve for x
    x = 21,481,580,035.17/143,682.48
  6. Step 6: Final answer
    x = 149,507.30

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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.