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Finding the Fourth Proportional to 131,058.57, 181,183.13 and 129,859.74

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Solution

The fourth proportional to 131,058.57, 181,183.13 and 129,859.74 is: 179,525.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,058.57 : 181,183.13 = 129,859.74 : x
  2. Step 2: Convert to fraction form
    131,058.57/181,183.13 = 129,859.74/x
  3. Step 3: Cross multiply
    131,058.57x = 181,183.13 × 129,859.74
  4. Step 4: Simplify right side
    131,058.57x = 23,528,393,991.86
  5. Step 5: Solve for x
    x = 23,528,393,991.86/131,058.57
  6. Step 6: Final answer
    x = 179,525.79

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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.