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Finding the Fourth Proportional to 139,472.35, 192,472.52 and 75,810.11

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Solution

The fourth proportional to 139,472.35, 192,472.52 and 75,810.11 is: 104,618.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,472.35 : 192,472.52 = 75,810.11 : x
  2. Step 2: Convert to fraction form
    139,472.35/192,472.52 = 75,810.11/x
  3. Step 3: Cross multiply
    139,472.35x = 192,472.52 × 75,810.11
  4. Step 4: Simplify right side
    139,472.35x = 14,591,361,571.76
  5. Step 5: Solve for x
    x = 14,591,361,571.76/139,472.35
  6. Step 6: Final answer
    x = 104,618.31

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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.