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Finding the Fourth Proportional to 143,531.60, 215,272.56 and 43,667.60

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Solution

The fourth proportional to 143,531.60, 215,272.56 and 43,667.60 is: 65,493.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,531.60 : 215,272.56 = 43,667.60 : x
  2. Step 2: Convert to fraction form
    143,531.60/215,272.56 = 43,667.60/x
  3. Step 3: Cross multiply
    143,531.60x = 215,272.56 × 43,667.60
  4. Step 4: Simplify right side
    143,531.60x = 9,400,436,041.06
  5. Step 5: Solve for x
    x = 9,400,436,041.06/143,531.60
  6. Step 6: Final answer
    x = 65,493.84

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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.