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Finding the Fourth Proportional to 139,416.80, 192,395.25 and 75,754.44

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Solution

The fourth proportional to 139,416.80, 192,395.25 and 75,754.44 is: 104,541.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,416.80 : 192,395.25 = 75,754.44 : x
  2. Step 2: Convert to fraction form
    139,416.80/192,395.25 = 75,754.44/x
  3. Step 3: Cross multiply
    139,416.80x = 192,395.25 × 75,754.44
  4. Step 4: Simplify right side
    139,416.80x = 14,574,794,422.41
  5. Step 5: Solve for x
    x = 14,574,794,422.41/139,416.80
  6. Step 6: Final answer
    x = 104,541.17

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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.