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Finding the Fourth Proportional to 139,470.17, 192,469.10 and 75,807.81

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Solution

The fourth proportional to 139,470.17, 192,469.10 and 75,807.81 is: 104,614.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,470.17 : 192,469.10 = 75,807.81 : x
  2. Step 2: Convert to fraction form
    139,470.17/192,469.10 = 75,807.81/x
  3. Step 3: Cross multiply
    139,470.17x = 192,469.10 × 75,807.81
  4. Step 4: Simplify right side
    139,470.17x = 14,590,660,584.63
  5. Step 5: Solve for x
    x = 14,590,660,584.63/139,470.17
  6. Step 6: Final answer
    x = 104,614.92

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1.5x scale

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.