Home / 79,986.06-120,102.40-67,667.94

Finding the Fourth Proportional to 79,986.06, 120,102.40 and 67,667.94

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Solution

The fourth proportional to 79,986.06, 120,102.40 and 67,667.94 is: 101,606.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,986.06 : 120,102.40 = 67,667.94 : x
  2. Step 2: Convert to fraction form
    79,986.06/120,102.40 = 67,667.94/x
  3. Step 3: Cross multiply
    79,986.06x = 120,102.40 × 67,667.94
  4. Step 4: Simplify right side
    79,986.06x = 8,127,081,997.06
  5. Step 5: Solve for x
    x = 8,127,081,997.06/79,986.06
  6. Step 6: Final answer
    x = 101,606.23

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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.