Home / 129,722.22-179,016.87-72,365.27

Finding the Fourth Proportional to 129,722.22, 179,016.87 and 72,365.27

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Solution

The fourth proportional to 129,722.22, 179,016.87 and 72,365.27 is: 99,864.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,722.22 : 179,016.87 = 72,365.27 : x
  2. Step 2: Convert to fraction form
    129,722.22/179,016.87 = 72,365.27/x
  3. Step 3: Cross multiply
    129,722.22x = 179,016.87 × 72,365.27
  4. Step 4: Simplify right side
    129,722.22x = 12,954,603,237.02
  5. Step 5: Solve for x
    x = 12,954,603,237.02/129,722.22
  6. Step 6: Final answer
    x = 99,864.18

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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.