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Finding the Fourth Proportional to 131,480.94, 181,331.92 and 111,162.08

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Solution

The fourth proportional to 131,480.94, 181,331.92 and 111,162.08 is: 153,309.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,480.94 : 181,331.92 = 111,162.08 : x
  2. Step 2: Convert to fraction form
    131,480.94/181,331.92 = 111,162.08/x
  3. Step 3: Cross multiply
    131,480.94x = 181,331.92 × 111,162.08
  4. Step 4: Simplify right side
    131,480.94x = 20,157,233,397.59
  5. Step 5: Solve for x
    x = 20,157,233,397.59/131,480.94
  6. Step 6: Final answer
    x = 153,309.17

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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.