Home / 139,868.45-193,020.68-76,206.23

Finding the Fourth Proportional to 139,868.45, 193,020.68 and 76,206.23

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Solution

The fourth proportional to 139,868.45, 193,020.68 and 76,206.23 is: 105,165.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,868.45 : 193,020.68 = 76,206.23 : x
  2. Step 2: Convert to fraction form
    139,868.45/193,020.68 = 76,206.23/x
  3. Step 3: Cross multiply
    139,868.45x = 193,020.68 × 76,206.23
  4. Step 4: Simplify right side
    139,868.45x = 14,709,378,334.84
  5. Step 5: Solve for x
    x = 14,709,378,334.84/139,868.45
  6. Step 6: Final answer
    x = 105,165.81

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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.