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Finding the Fourth Proportional to 139,156.87, 192,036.84 and 75,494.67

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Solution

The fourth proportional to 139,156.87, 192,036.84 and 75,494.67 is: 104,182.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,156.87 : 192,036.84 = 75,494.67 : x
  2. Step 2: Convert to fraction form
    139,156.87/192,036.84 = 75,494.67/x
  3. Step 3: Cross multiply
    139,156.87x = 192,036.84 × 75,494.67
  4. Step 4: Simplify right side
    139,156.87x = 14,497,757,863.64
  5. Step 5: Solve for x
    x = 14,497,757,863.64/139,156.87
  6. Step 6: Final answer
    x = 104,182.84

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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.