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Finding the Fourth Proportional to 139,409.04, 192,381.71 and 75,747.29

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Solution

The fourth proportional to 139,409.04, 192,381.71 and 75,747.29 is: 104,529.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,409.04 : 192,381.71 = 75,747.29 : x
  2. Step 2: Convert to fraction form
    139,409.04/192,381.71 = 75,747.29/x
  3. Step 3: Cross multiply
    139,409.04x = 192,381.71 × 75,747.29
  4. Step 4: Simplify right side
    139,409.04x = 14,572,393,280.28
  5. Step 5: Solve for x
    x = 14,572,393,280.28/139,409.04
  6. Step 6: Final answer
    x = 104,529.76

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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.