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Finding the Fourth Proportional to 492,105.87, 738,158.82 and 118,128.87

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Solution

The fourth proportional to 492,105.87, 738,158.82 and 118,128.87 is: 177,193.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,105.87 : 738,158.82 = 118,128.87 : x
  2. Step 2: Convert to fraction form
    492,105.87/738,158.82 = 118,128.87/x
  3. Step 3: Cross multiply
    492,105.87x = 738,158.82 × 118,128.87
  4. Step 4: Simplify right side
    492,105.87x = 87,197,867,287.13
  5. Step 5: Solve for x
    x = 87,197,867,287.13/492,105.87
  6. Step 6: Final answer
    x = 177,193.31

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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.