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Finding the Fourth Proportional to 139,364.08, 192,324.20 and 75,702.96

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Solution

The fourth proportional to 139,364.08, 192,324.20 and 75,702.96 is: 104,471.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,364.08 : 192,324.20 = 75,702.96 : x
  2. Step 2: Convert to fraction form
    139,364.08/192,324.20 = 75,702.96/x
  3. Step 3: Cross multiply
    139,364.08x = 192,324.20 × 75,702.96
  4. Step 4: Simplify right side
    139,364.08x = 14,559,511,219.63
  5. Step 5: Solve for x
    x = 14,559,511,219.63/139,364.08
  6. Step 6: Final answer
    x = 104,471.05

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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.