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Finding the Fourth Proportional to 156,338.26, 215,667.56 and 98,880.81

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Solution

The fourth proportional to 156,338.26, 215,667.56 and 98,880.81 is: 136,405.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,338.26 : 215,667.56 = 98,880.81 : x
  2. Step 2: Convert to fraction form
    156,338.26/215,667.56 = 98,880.81/x
  3. Step 3: Cross multiply
    156,338.26x = 215,667.56 × 98,880.81
  4. Step 4: Simplify right side
    156,338.26x = 21,325,383,270.73
  5. Step 5: Solve for x
    x = 21,325,383,270.73/156,338.26
  6. Step 6: Final answer
    x = 136,405.40

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.