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Finding the Fourth Proportional to 139,416.87, 192,395.88 and 75,754.92

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Solution

The fourth proportional to 139,416.87, 192,395.88 and 75,754.92 is: 104,542.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,416.87 : 192,395.88 = 75,754.92 : x
  2. Step 2: Convert to fraction form
    139,416.87/192,395.88 = 75,754.92/x
  3. Step 3: Cross multiply
    139,416.87x = 192,395.88 × 75,754.92
  4. Step 4: Simplify right side
    139,416.87x = 14,574,934,497.73
  5. Step 5: Solve for x
    x = 14,574,934,497.73/139,416.87
  6. Step 6: Final answer
    x = 104,542.12

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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.