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Finding the Fourth Proportional to 139,596.84, 192,642.77 and 75,934.89

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Solution

The fourth proportional to 139,596.84, 192,642.77 and 75,934.89 is: 104,789.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,596.84 : 192,642.77 = 75,934.89 : x
  2. Step 2: Convert to fraction form
    139,596.84/192,642.77 = 75,934.89/x
  3. Step 3: Cross multiply
    139,596.84x = 192,642.77 × 75,934.89
  4. Step 4: Simplify right side
    139,596.84x = 14,628,307,169.57
  5. Step 5: Solve for x
    x = 14,628,307,169.57/139,596.84
  6. Step 6: Final answer
    x = 104,789.67

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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.