Home / 139,838.91-192,977.24-76,176.51

Finding the Fourth Proportional to 139,838.91, 192,977.24 and 76,176.51

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Solution

The fourth proportional to 139,838.91, 192,977.24 and 76,176.51 is: 105,123.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,838.91 : 192,977.24 = 76,176.51 : x
  2. Step 2: Convert to fraction form
    139,838.91/192,977.24 = 76,176.51/x
  3. Step 3: Cross multiply
    139,838.91x = 192,977.24 × 76,176.51
  4. Step 4: Simplify right side
    139,838.91x = 14,700,332,271.75
  5. Step 5: Solve for x
    x = 14,700,332,271.75/139,838.91
  6. Step 6: Final answer
    x = 105,123.33

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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.