Home / 108,040.20-161,714.70-76,936.20

Finding the Fourth Proportional to 108,040.20, 161,714.70 and 76,936.20

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Solution

The fourth proportional to 108,040.20, 161,714.70 and 76,936.20 is: 115,158.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,040.20 : 161,714.70 = 76,936.20 : x
  2. Step 2: Convert to fraction form
    108,040.20/161,714.70 = 76,936.20/x
  3. Step 3: Cross multiply
    108,040.20x = 161,714.70 × 76,936.20
  4. Step 4: Simplify right side
    108,040.20x = 12,441,714,502.14
  5. Step 5: Solve for x
    x = 12,441,714,502.14/108,040.20
  6. Step 6: Final answer
    x = 115,158.20

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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.