Home / 129,899.36-195,028.09-89,819.89

Finding the Fourth Proportional to 129,899.36, 195,028.09 and 89,819.89

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Solution

The fourth proportional to 129,899.36, 195,028.09 and 89,819.89 is: 134,853.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,899.36 : 195,028.09 = 89,819.89 : x
  2. Step 2: Convert to fraction form
    129,899.36/195,028.09 = 89,819.89/x
  3. Step 3: Cross multiply
    129,899.36x = 195,028.09 × 89,819.89
  4. Step 4: Simplify right side
    129,899.36x = 17,517,400,878.59
  5. Step 5: Solve for x
    x = 17,517,400,878.59/129,899.36
  6. Step 6: Final answer
    x = 134,853.63

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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.