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Finding the Fourth Proportional to 125,879.64, 188,754.45 and 37,121.86

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Solution

The fourth proportional to 125,879.64, 188,754.45 and 37,121.86 is: 55,663.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,879.64 : 188,754.45 = 37,121.86 : x
  2. Step 2: Convert to fraction form
    125,879.64/188,754.45 = 37,121.86/x
  3. Step 3: Cross multiply
    125,879.64x = 188,754.45 × 37,121.86
  4. Step 4: Simplify right side
    125,879.64x = 7,006,916,267.28
  5. Step 5: Solve for x
    x = 7,006,916,267.28/125,879.64
  6. Step 6: Final answer
    x = 55,663.62

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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.