Home / 139,178.20-192,066.45-75,515.95

Finding the Fourth Proportional to 139,178.20, 192,066.45 and 75,515.95

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Solution

The fourth proportional to 139,178.20, 192,066.45 and 75,515.95 is: 104,212.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,178.20 : 192,066.45 = 75,515.95 : x
  2. Step 2: Convert to fraction form
    139,178.20/192,066.45 = 75,515.95/x
  3. Step 3: Cross multiply
    139,178.20x = 192,066.45 × 75,515.95
  4. Step 4: Simplify right side
    139,178.20x = 14,504,080,434.88
  5. Step 5: Solve for x
    x = 14,504,080,434.88/139,178.20
  6. Step 6: Final answer
    x = 104,212.30

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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.