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Finding the Fourth Proportional to 104,961.60, 157,442.40 and 100,879.20

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Solution

The fourth proportional to 104,961.60, 157,442.40 and 100,879.20 is: 151,318.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,961.60 : 157,442.40 = 100,879.20 : x
  2. Step 2: Convert to fraction form
    104,961.60/157,442.40 = 100,879.20/x
  3. Step 3: Cross multiply
    104,961.60x = 157,442.40 × 100,879.20
  4. Step 4: Simplify right side
    104,961.60x = 15,882,663,358.08
  5. Step 5: Solve for x
    x = 15,882,663,358.08/104,961.60
  6. Step 6: Final answer
    x = 151,318.80

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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.