Home / 116,911.08-161,229.69-76,610.21

Finding the Fourth Proportional to 116,911.08, 161,229.69 and 76,610.21

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Solution

The fourth proportional to 116,911.08, 161,229.69 and 76,610.21 is: 105,651.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,911.08 : 161,229.69 = 76,610.21 : x
  2. Step 2: Convert to fraction form
    116,911.08/161,229.69 = 76,610.21/x
  3. Step 3: Cross multiply
    116,911.08x = 161,229.69 × 76,610.21
  4. Step 4: Simplify right side
    116,911.08x = 12,351,839,602.99
  5. Step 5: Solve for x
    x = 12,351,839,602.99/116,911.08
  6. Step 6: Final answer
    x = 105,651.57

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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.