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Finding the Fourth Proportional to 131,802.66, 181,932.03 and 80,119.58

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Solution

The fourth proportional to 131,802.66, 181,932.03 and 80,119.58 is: 110,591.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,802.66 : 181,932.03 = 80,119.58 : x
  2. Step 2: Convert to fraction form
    131,802.66/181,932.03 = 80,119.58/x
  3. Step 3: Cross multiply
    131,802.66x = 181,932.03 × 80,119.58
  4. Step 4: Simplify right side
    131,802.66x = 14,576,317,832.15
  5. Step 5: Solve for x
    x = 14,576,317,832.15/131,802.66
  6. Step 6: Final answer
    x = 110,591.99

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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.