Home / 139,834.24-192,973.36-76,172

Finding the Fourth Proportional to 139,834.24, 192,973.36 and 76,172

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Solution

The fourth proportional to 139,834.24, 192,973.36 and 76,172 is: 105,118.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,834.24 : 192,973.36 = 76,172 : x
  2. Step 2: Convert to fraction form
    139,834.24/192,973.36 = 76,172/x
  3. Step 3: Cross multiply
    139,834.24x = 192,973.36 × 76,172
  4. Step 4: Simplify right side
    139,834.24x = 14,699,166,777.92
  5. Step 5: Solve for x
    x = 14,699,166,777.92/139,834.24
  6. Step 6: Final answer
    x = 105,118.51

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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.