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Finding the Fourth Proportional to 107,776.66, 161,388.96 and 89,963.03

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Solution

The fourth proportional to 107,776.66, 161,388.96 and 89,963.03 is: 134,714.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,776.66 : 161,388.96 = 89,963.03 : x
  2. Step 2: Convert to fraction form
    107,776.66/161,388.96 = 89,963.03/x
  3. Step 3: Cross multiply
    107,776.66x = 161,388.96 × 89,963.03
  4. Step 4: Simplify right side
    107,776.66x = 14,519,039,850.15
  5. Step 5: Solve for x
    x = 14,519,039,850.15/107,776.66
  6. Step 6: Final answer
    x = 134,714.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.