Home / 129,975.98-179,360.43-72,603.91

Finding the Fourth Proportional to 129,975.98, 179,360.43 and 72,603.91

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Solution

The fourth proportional to 129,975.98, 179,360.43 and 72,603.91 is: 100,189.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,975.98 : 179,360.43 = 72,603.91 : x
  2. Step 2: Convert to fraction form
    129,975.98/179,360.43 = 72,603.91/x
  3. Step 3: Cross multiply
    129,975.98x = 179,360.43 × 72,603.91
  4. Step 4: Simplify right side
    129,975.98x = 13,022,268,469.22
  5. Step 5: Solve for x
    x = 13,022,268,469.22/129,975.98
  6. Step 6: Final answer
    x = 100,189.81

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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.