Home / 129,723.62-179,030.91-81,333.20

Finding the Fourth Proportional to 129,723.62, 179,030.91 and 81,333.20

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Solution

The fourth proportional to 129,723.62, 179,030.91 and 81,333.20 is: 112,247.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,723.62 : 179,030.91 = 81,333.20 : x
  2. Step 2: Convert to fraction form
    129,723.62/179,030.91 = 81,333.20/x
  3. Step 3: Cross multiply
    129,723.62x = 179,030.91 × 81,333.20
  4. Step 4: Simplify right side
    129,723.62x = 14,561,155,914.06
  5. Step 5: Solve for x
    x = 14,561,155,914.06/129,723.62
  6. Step 6: Final answer
    x = 112,247.53

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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.