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Finding the Fourth Proportional to 139,670.60, 192,747.22 and 76,010.12

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Solution

The fourth proportional to 139,670.60, 192,747.22 and 76,010.12 is: 104,894.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,670.60 : 192,747.22 = 76,010.12 : x
  2. Step 2: Convert to fraction form
    139,670.60/192,747.22 = 76,010.12/x
  3. Step 3: Cross multiply
    139,670.60x = 192,747.22 × 76,010.12
  4. Step 4: Simplify right side
    139,670.60x = 14,650,739,321.87
  5. Step 5: Solve for x
    x = 14,650,739,321.87/139,670.60
  6. Step 6: Final answer
    x = 104,894.94

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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.