Home / 139,619.96-192,715.16-82,292.60

Finding the Fourth Proportional to 139,619.96, 192,715.16 and 82,292.60

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Solution

The fourth proportional to 139,619.96, 192,715.16 and 82,292.60 is: 113,587.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,619.96 : 192,715.16 = 82,292.60 : x
  2. Step 2: Convert to fraction form
    139,619.96/192,715.16 = 82,292.60/x
  3. Step 3: Cross multiply
    139,619.96x = 192,715.16 × 82,292.60
  4. Step 4: Simplify right side
    139,619.96x = 15,859,031,575.82
  5. Step 5: Solve for x
    x = 15,859,031,575.82/139,619.96
  6. Step 6: Final answer
    x = 113,587.14

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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.