Home / 139,809.06-192,938.13-76,147.38

Finding the Fourth Proportional to 139,809.06, 192,938.13 and 76,147.38

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Solution

The fourth proportional to 139,809.06, 192,938.13 and 76,147.38 is: 105,084.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,809.06 : 192,938.13 = 76,147.38 : x
  2. Step 2: Convert to fraction form
    139,809.06/192,938.13 = 76,147.38/x
  3. Step 3: Cross multiply
    139,809.06x = 192,938.13 × 76,147.38
  4. Step 4: Simplify right side
    139,809.06x = 14,691,733,101.60
  5. Step 5: Solve for x
    x = 14,691,733,101.60/139,809.06
  6. Step 6: Final answer
    x = 105,084.27

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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.