Home / 139,986.96-193,177.80-76,326

Finding the Fourth Proportional to 139,986.96, 193,177.80 and 76,326

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Solution

The fourth proportional to 139,986.96, 193,177.80 and 76,326 is: 105,327.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,986.96 : 193,177.80 = 76,326 : x
  2. Step 2: Convert to fraction form
    139,986.96/193,177.80 = 76,326/x
  3. Step 3: Cross multiply
    139,986.96x = 193,177.80 × 76,326
  4. Step 4: Simplify right side
    139,986.96x = 14,744,488,762.80
  5. Step 5: Solve for x
    x = 14,744,488,762.80/139,986.96
  6. Step 6: Final answer
    x = 105,327.59

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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.