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Finding the Fourth Proportional to 139,569.29, 192,606.53 and 75,907.55

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Solution

The fourth proportional to 139,569.29, 192,606.53 and 75,907.55 is: 104,752.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,569.29 : 192,606.53 = 75,907.55 : x
  2. Step 2: Convert to fraction form
    139,569.29/192,606.53 = 75,907.55/x
  3. Step 3: Cross multiply
    139,569.29x = 192,606.53 × 75,907.55
  4. Step 4: Simplify right side
    139,569.29x = 14,620,288,463.73
  5. Step 5: Solve for x
    x = 14,620,288,463.73/139,569.29
  6. Step 6: Final answer
    x = 104,752.91

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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.