Home / 131,899.49-181,879.43-129,131.72

Finding the Fourth Proportional to 131,899.49, 181,879.43 and 129,131.72

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Solution

The fourth proportional to 131,899.49, 181,879.43 and 129,131.72 is: 178,062.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,899.49 : 181,879.43 = 129,131.72 : x
  2. Step 2: Convert to fraction form
    131,899.49/181,879.43 = 129,131.72/x
  3. Step 3: Cross multiply
    131,899.49x = 181,879.43 × 129,131.72
  4. Step 4: Simplify right side
    131,899.49x = 23,486,402,755.51
  5. Step 5: Solve for x
    x = 23,486,402,755.51/131,899.49
  6. Step 6: Final answer
    x = 178,062.88

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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.