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Finding the Fourth Proportional to 136,511.80, 204,767.70 and 89,272.60

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Solution

The fourth proportional to 136,511.80, 204,767.70 and 89,272.60 is: 133,908.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,511.80 : 204,767.70 = 89,272.60 : x
  2. Step 2: Convert to fraction form
    136,511.80/204,767.70 = 89,272.60/x
  3. Step 3: Cross multiply
    136,511.80x = 204,767.70 × 89,272.60
  4. Step 4: Simplify right side
    136,511.80x = 18,280,144,975.02
  5. Step 5: Solve for x
    x = 18,280,144,975.02/136,511.80
  6. Step 6: Final answer
    x = 133,908.90

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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.