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Finding the Fourth Proportional to 139,533.82, 192,555.72 and 75,871.66

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Solution

The fourth proportional to 139,533.82, 192,555.72 and 75,871.66 is: 104,702.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,533.82 : 192,555.72 = 75,871.66 : x
  2. Step 2: Convert to fraction form
    139,533.82/192,555.72 = 75,871.66/x
  3. Step 3: Cross multiply
    139,533.82x = 192,555.72 × 75,871.66
  4. Step 4: Simplify right side
    139,533.82x = 14,609,522,118.90
  5. Step 5: Solve for x
    x = 14,609,522,118.90/139,533.82
  6. Step 6: Final answer
    x = 104,702.37

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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.