Home / 116,982.90-161,393.11-76,719.02

Finding the Fourth Proportional to 116,982.90, 161,393.11 and 76,719.02

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Solution

The fourth proportional to 116,982.90, 161,393.11 and 76,719.02 is: 105,843.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,982.90 : 161,393.11 = 76,719.02 : x
  2. Step 2: Convert to fraction form
    116,982.90/161,393.11 = 76,719.02/x
  3. Step 3: Cross multiply
    116,982.90x = 161,393.11 × 76,719.02
  4. Step 4: Simplify right side
    116,982.90x = 12,381,920,235.19
  5. Step 5: Solve for x
    x = 12,381,920,235.19/116,982.90
  6. Step 6: Final answer
    x = 105,843.85

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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.