Home / 131,838.36-181,936.49-71,408.85

Finding the Fourth Proportional to 131,838.36, 181,936.49 and 71,408.85

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Solution

The fourth proportional to 131,838.36, 181,936.49 and 71,408.85 is: 98,543.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,838.36 : 181,936.49 = 71,408.85 : x
  2. Step 2: Convert to fraction form
    131,838.36/181,936.49 = 71,408.85/x
  3. Step 3: Cross multiply
    131,838.36x = 181,936.49 × 71,408.85
  4. Step 4: Simplify right side
    131,838.36x = 12,991,875,523.94
  5. Step 5: Solve for x
    x = 12,991,875,523.94/131,838.36
  6. Step 6: Final answer
    x = 98,543.97

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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.