Home / 107,969.09-161,980.97-76,440.92

Finding the Fourth Proportional to 107,969.09, 161,980.97 and 76,440.92

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Solution

The fourth proportional to 107,969.09, 161,980.97 and 76,440.92 is: 114,680.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,969.09 : 161,980.97 = 76,440.92 : x
  2. Step 2: Convert to fraction form
    107,969.09/161,980.97 = 76,440.92/x
  3. Step 3: Cross multiply
    107,969.09x = 161,980.97 × 76,440.92
  4. Step 4: Simplify right side
    107,969.09x = 12,381,973,177.18
  5. Step 5: Solve for x
    x = 12,381,973,177.18/107,969.09
  6. Step 6: Final answer
    x = 114,680.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.