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Finding the Fourth Proportional to 139,798.58, 192,927.50 and 79,374.85

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Solution

The fourth proportional to 139,798.58, 192,927.50 and 79,374.85 is: 109,540.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,798.58 : 192,927.50 = 79,374.85 : x
  2. Step 2: Convert to fraction form
    139,798.58/192,927.50 = 79,374.85/x
  3. Step 3: Cross multiply
    139,798.58x = 192,927.50 × 79,374.85
  4. Step 4: Simplify right side
    139,798.58x = 15,313,591,373.38
  5. Step 5: Solve for x
    x = 15,313,591,373.38/139,798.58
  6. Step 6: Final answer
    x = 109,540.39

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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.