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Finding the Fourth Proportional to 139,027.20, 191,858.52 and 75,366

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Solution

The fourth proportional to 139,027.20, 191,858.52 and 75,366 is: 104,005.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,027.20 : 191,858.52 = 75,366 : x
  2. Step 2: Convert to fraction form
    139,027.20/191,858.52 = 75,366/x
  3. Step 3: Cross multiply
    139,027.20x = 191,858.52 × 75,366
  4. Step 4: Simplify right side
    139,027.20x = 14,459,609,218.32
  5. Step 5: Solve for x
    x = 14,459,609,218.32/139,027.20
  6. Step 6: Final answer
    x = 104,005.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.