Home / 116,895.12-161,314.20-71,651.76

Finding the Fourth Proportional to 116,895.12, 161,314.20 and 71,651.76

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Solution

The fourth proportional to 116,895.12, 161,314.20 and 71,651.76 is: 98,878.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,895.12 : 161,314.20 = 71,651.76 : x
  2. Step 2: Convert to fraction form
    116,895.12/161,314.20 = 71,651.76/x
  3. Step 3: Cross multiply
    116,895.12x = 161,314.20 × 71,651.76
  4. Step 4: Simplify right side
    116,895.12x = 11,558,446,342.99
  5. Step 5: Solve for x
    x = 11,558,446,342.99/116,895.12
  6. Step 6: Final answer
    x = 98,878.78

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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.