Home / 131,357.97-181,203.93-80,395.39

Finding the Fourth Proportional to 131,357.97, 181,203.93 and 80,395.39

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Solution

The fourth proportional to 131,357.97, 181,203.93 and 80,395.39 is: 110,902.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,357.97 : 181,203.93 = 80,395.39 : x
  2. Step 2: Convert to fraction form
    131,357.97/181,203.93 = 80,395.39/x
  3. Step 3: Cross multiply
    131,357.97x = 181,203.93 × 80,395.39
  4. Step 4: Simplify right side
    131,357.97x = 14,567,960,621.88
  5. Step 5: Solve for x
    x = 14,567,960,621.88/131,357.97
  6. Step 6: Final answer
    x = 110,902.75

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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.