Home / 139,835.78-192,964.28-82,461.95

Finding the Fourth Proportional to 139,835.78, 192,964.28 and 82,461.95

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Solution

The fourth proportional to 139,835.78, 192,964.28 and 82,461.95 is: 113,792.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,835.78 : 192,964.28 = 82,461.95 : x
  2. Step 2: Convert to fraction form
    139,835.78/192,964.28 = 82,461.95/x
  3. Step 3: Cross multiply
    139,835.78x = 192,964.28 × 82,461.95
  4. Step 4: Simplify right side
    139,835.78x = 15,912,209,432.01
  5. Step 5: Solve for x
    x = 15,912,209,432.01/139,835.78
  6. Step 6: Final answer
    x = 113,792.12

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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.