Home / 131,918.12-181,983.62-86,577.96

Finding the Fourth Proportional to 131,918.12, 181,983.62 and 86,577.96

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Solution

The fourth proportional to 131,918.12, 181,983.62 and 86,577.96 is: 119,435.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,918.12 : 181,983.62 = 86,577.96 : x
  2. Step 2: Convert to fraction form
    131,918.12/181,983.62 = 86,577.96/x
  3. Step 3: Cross multiply
    131,918.12x = 181,983.62 × 86,577.96
  4. Step 4: Simplify right side
    131,918.12x = 15,755,770,573.02
  5. Step 5: Solve for x
    x = 15,755,770,573.02/131,918.12
  6. Step 6: Final answer
    x = 119,435.98

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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.