Home / 131,326.91-181,231.86-74,738.28

Finding the Fourth Proportional to 131,326.91, 181,231.86 and 74,738.28

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Solution

The fourth proportional to 131,326.91, 181,231.86 and 74,738.28 is: 103,139.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,326.91 : 181,231.86 = 74,738.28 : x
  2. Step 2: Convert to fraction form
    131,326.91/181,231.86 = 74,738.28/x
  3. Step 3: Cross multiply
    131,326.91x = 181,231.86 × 74,738.28
  4. Step 4: Simplify right side
    131,326.91x = 13,544,957,497.60
  5. Step 5: Solve for x
    x = 13,544,957,497.60/131,326.91
  6. Step 6: Final answer
    x = 103,139.24

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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.