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Finding the Fourth Proportional to 139,436, 192,422.90 and 75,773.80

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Solution

The fourth proportional to 139,436, 192,422.90 and 75,773.80 is: 104,568.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,436 : 192,422.90 = 75,773.80 : x
  2. Step 2: Convert to fraction form
    139,436/192,422.90 = 75,773.80/x
  3. Step 3: Cross multiply
    139,436x = 192,422.90 × 75,773.80
  4. Step 4: Simplify right side
    139,436x = 14,580,614,340.02
  5. Step 5: Solve for x
    x = 14,580,614,340.02/139,436
  6. Step 6: Final answer
    x = 104,568.51

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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.