Home / 131,853.24-181,957.68-78,164.64

Finding the Fourth Proportional to 131,853.24, 181,957.68 and 78,164.64

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Solution

The fourth proportional to 131,853.24, 181,957.68 and 78,164.64 is: 107,867.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,853.24 : 181,957.68 = 78,164.64 : x
  2. Step 2: Convert to fraction form
    131,853.24/181,957.68 = 78,164.64/x
  3. Step 3: Cross multiply
    131,853.24x = 181,957.68 × 78,164.64
  4. Step 4: Simplify right side
    131,853.24x = 14,222,656,552.44
  5. Step 5: Solve for x
    x = 14,222,656,552.44/131,853.24
  6. Step 6: Final answer
    x = 107,867.33

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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.