Home / 139,839.04-192,976.64-76,176.64

Finding the Fourth Proportional to 139,839.04, 192,976.64 and 76,176.64

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Solution

The fourth proportional to 139,839.04, 192,976.64 and 76,176.64 is: 105,123.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,839.04 : 192,976.64 = 76,176.64 : x
  2. Step 2: Convert to fraction form
    139,839.04/192,976.64 = 76,176.64/x
  3. Step 3: Cross multiply
    139,839.04x = 192,976.64 × 76,176.64
  4. Step 4: Simplify right side
    139,839.04x = 14,700,312,033.69
  5. Step 5: Solve for x
    x = 14,700,312,033.69/139,839.04
  6. Step 6: Final answer
    x = 105,123.09

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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.