Home / 131,578.56-181,579.42-72,643.86

Finding the Fourth Proportional to 131,578.56, 181,579.42 and 72,643.86

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Solution

The fourth proportional to 131,578.56, 181,579.42 and 72,643.86 is: 100,249.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,578.56 : 181,579.42 = 72,643.86 : x
  2. Step 2: Convert to fraction form
    131,578.56/181,579.42 = 72,643.86/x
  3. Step 3: Cross multiply
    131,578.56x = 181,579.42 × 72,643.86
  4. Step 4: Simplify right side
    131,578.56x = 13,190,629,965.36
  5. Step 5: Solve for x
    x = 13,190,629,965.36/131,578.56
  6. Step 6: Final answer
    x = 100,249.08

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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.