Home / 116,991.76-161,374.24-76,708.12

Finding the Fourth Proportional to 116,991.76, 161,374.24 and 76,708.12

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Solution

The fourth proportional to 116,991.76, 161,374.24 and 76,708.12 is: 105,808.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,991.76 : 161,374.24 = 76,708.12 : x
  2. Step 2: Convert to fraction form
    116,991.76/161,374.24 = 76,708.12/x
  3. Step 3: Cross multiply
    116,991.76x = 161,374.24 × 76,708.12
  4. Step 4: Simplify right side
    116,991.76x = 12,378,714,566.83
  5. Step 5: Solve for x
    x = 12,378,714,566.83/116,991.76
  6. Step 6: Final answer
    x = 105,808.43

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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.