Home / 131,837.72-181,935.97-71,408.34

Finding the Fourth Proportional to 131,837.72, 181,935.97 and 71,408.34

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Solution

The fourth proportional to 131,837.72, 181,935.97 and 71,408.34 is: 98,543.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,837.72 : 181,935.97 = 71,408.34 : x
  2. Step 2: Convert to fraction form
    131,837.72/181,935.97 = 71,408.34/x
  3. Step 3: Cross multiply
    131,837.72x = 181,935.97 × 71,408.34
  4. Step 4: Simplify right side
    131,837.72x = 12,991,745,425.47
  5. Step 5: Solve for x
    x = 12,991,745,425.47/131,837.72
  6. Step 6: Final answer
    x = 98,543.47

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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.