Home / 131,578.93-181,578.79-71,149.43

Finding the Fourth Proportional to 131,578.93, 181,578.79 and 71,149.43

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Solution

The fourth proportional to 131,578.93, 181,578.79 and 71,149.43 is: 98,186.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,578.93 : 181,578.79 = 71,149.43 : x
  2. Step 2: Convert to fraction form
    131,578.93/181,578.79 = 71,149.43/x
  3. Step 3: Cross multiply
    131,578.93x = 181,578.79 × 71,149.43
  4. Step 4: Simplify right side
    131,578.93x = 12,919,227,408.59
  5. Step 5: Solve for x
    x = 12,919,227,408.59/131,578.93
  6. Step 6: Final answer
    x = 98,186.14

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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.