Home / 129,883.12-179,236.95-72,523.33

Finding the Fourth Proportional to 129,883.12, 179,236.95 and 72,523.33

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Solution

The fourth proportional to 129,883.12, 179,236.95 and 72,523.33 is: 100,081.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,883.12 : 179,236.95 = 72,523.33 : x
  2. Step 2: Convert to fraction form
    129,883.12/179,236.95 = 72,523.33/x
  3. Step 3: Cross multiply
    129,883.12x = 179,236.95 × 72,523.33
  4. Step 4: Simplify right side
    129,883.12x = 12,998,860,473.04
  5. Step 5: Solve for x
    x = 12,998,860,473.04/129,883.12
  6. Step 6: Final answer
    x = 100,081.22

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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.