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Finding the Fourth Proportional to 118,125.62, 161,709.18 and 117,281.39

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Solution

The fourth proportional to 118,125.62, 161,709.18 and 117,281.39 is: 160,553.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,125.62 : 161,709.18 = 117,281.39 : x
  2. Step 2: Convert to fraction form
    118,125.62/161,709.18 = 117,281.39/x
  3. Step 3: Cross multiply
    118,125.62x = 161,709.18 × 117,281.39
  4. Step 4: Simplify right side
    118,125.62x = 18,965,476,819.75
  5. Step 5: Solve for x
    x = 18,965,476,819.75/118,125.62
  6. Step 6: Final answer
    x = 160,553.47

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.