Home / 116,880.40-161,296.68-66,578.32

Finding the Fourth Proportional to 116,880.40, 161,296.68 and 66,578.32

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Solution

The fourth proportional to 116,880.40, 161,296.68 and 66,578.32 is: 91,879.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,880.40 : 161,296.68 = 66,578.32 : x
  2. Step 2: Convert to fraction form
    116,880.40/161,296.68 = 66,578.32/x
  3. Step 3: Cross multiply
    116,880.40x = 161,296.68 × 66,578.32
  4. Step 4: Simplify right side
    116,880.40x = 10,738,861,975.98
  5. Step 5: Solve for x
    x = 10,738,861,975.98/116,880.40
  6. Step 6: Final answer
    x = 91,879.07

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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.