Home / 139,642.38-192,709.94-75,983.67

Finding the Fourth Proportional to 139,642.38, 192,709.94 and 75,983.67

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Solution

The fourth proportional to 139,642.38, 192,709.94 and 75,983.67 is: 104,859.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,642.38 : 192,709.94 = 75,983.67 : x
  2. Step 2: Convert to fraction form
    139,642.38/192,709.94 = 75,983.67/x
  3. Step 3: Cross multiply
    139,642.38x = 192,709.94 × 75,983.67
  4. Step 4: Simplify right side
    139,642.38x = 14,642,808,106.76
  5. Step 5: Solve for x
    x = 14,642,808,106.76/139,642.38
  6. Step 6: Final answer
    x = 104,859.34

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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.