Home / 116,942.63-161,454.62-81,120.11

Finding the Fourth Proportional to 116,942.63, 161,454.62 and 81,120.11

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Solution

The fourth proportional to 116,942.63, 161,454.62 and 81,120.11 is: 111,996.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,942.63 : 161,454.62 = 81,120.11 : x
  2. Step 2: Convert to fraction form
    116,942.63/161,454.62 = 81,120.11/x
  3. Step 3: Cross multiply
    116,942.63x = 161,454.62 × 81,120.11
  4. Step 4: Simplify right side
    116,942.63x = 13,097,216,534.41
  5. Step 5: Solve for x
    x = 13,097,216,534.41/116,942.63
  6. Step 6: Final answer
    x = 111,996.94

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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.