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Finding the Fourth Proportional to 139,475.52, 192,475.44 and 79,057.59

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Solution

The fourth proportional to 139,475.52, 192,475.44 and 79,057.59 is: 109,099.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,475.52 : 192,475.44 = 79,057.59 : x
  2. Step 2: Convert to fraction form
    139,475.52/192,475.44 = 79,057.59/x
  3. Step 3: Cross multiply
    139,475.52x = 192,475.44 × 79,057.59
  4. Step 4: Simplify right side
    139,475.52x = 15,216,643,698.81
  5. Step 5: Solve for x
    x = 15,216,643,698.81/139,475.52
  6. Step 6: Final answer
    x = 109,099.03

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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.