Home / 131,786.96-181,858.77-77,331.76

Finding the Fourth Proportional to 131,786.96, 181,858.77 and 77,331.76

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Solution

The fourth proportional to 131,786.96, 181,858.77 and 77,331.76 is: 106,713.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,786.96 : 181,858.77 = 77,331.76 : x
  2. Step 2: Convert to fraction form
    131,786.96/181,858.77 = 77,331.76/x
  3. Step 3: Cross multiply
    131,786.96x = 181,858.77 × 77,331.76
  4. Step 4: Simplify right side
    131,786.96x = 14,063,458,300.89
  5. Step 5: Solve for x
    x = 14,063,458,300.89/131,786.96
  6. Step 6: Final answer
    x = 106,713.58

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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.