Home / 129,703.88-178,994.09-73,115.25

Finding the Fourth Proportional to 129,703.88, 178,994.09 and 73,115.25

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Solution

The fourth proportional to 129,703.88, 178,994.09 and 73,115.25 is: 100,900.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,703.88 : 178,994.09 = 73,115.25 : x
  2. Step 2: Convert to fraction form
    129,703.88/178,994.09 = 73,115.25/x
  3. Step 3: Cross multiply
    129,703.88x = 178,994.09 × 73,115.25
  4. Step 4: Simplify right side
    129,703.88x = 13,087,197,273.30
  5. Step 5: Solve for x
    x = 13,087,197,273.30/129,703.88
  6. Step 6: Final answer
    x = 100,900.59

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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.