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Finding the Fourth Proportional to 143,603.96, 215,343.32 and 43,740.68

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Solution

The fourth proportional to 143,603.96, 215,343.32 and 43,740.68 is: 65,591.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,603.96 : 215,343.32 = 43,740.68 : x
  2. Step 2: Convert to fraction form
    143,603.96/215,343.32 = 43,740.68/x
  3. Step 3: Cross multiply
    143,603.96x = 215,343.32 × 43,740.68
  4. Step 4: Simplify right side
    143,603.96x = 9,419,263,250.26
  5. Step 5: Solve for x
    x = 9,419,263,250.26/143,603.96
  6. Step 6: Final answer
    x = 65,591.95

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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.