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Finding the Fourth Proportional to 139,454.64, 192,439.44 and 75,792.06

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Solution

The fourth proportional to 139,454.64, 192,439.44 and 75,792.06 is: 104,588.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,454.64 : 192,439.44 = 75,792.06 : x
  2. Step 2: Convert to fraction form
    139,454.64/192,439.44 = 75,792.06/x
  3. Step 3: Cross multiply
    139,454.64x = 192,439.44 × 75,792.06
  4. Step 4: Simplify right side
    139,454.64x = 14,585,381,582.85
  5. Step 5: Solve for x
    x = 14,585,381,582.85/139,454.64
  6. Step 6: Final answer
    x = 104,588.71

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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.