Home / 104,309.48-143,854.18-81,914.60

Finding the Fourth Proportional to 104,309.48, 143,854.18 and 81,914.60

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Solution

The fourth proportional to 104,309.48, 143,854.18 and 81,914.60 is: 112,969.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,309.48 : 143,854.18 = 81,914.60 : x
  2. Step 2: Convert to fraction form
    104,309.48/143,854.18 = 81,914.60/x
  3. Step 3: Cross multiply
    104,309.48x = 143,854.18 × 81,914.60
  4. Step 4: Simplify right side
    104,309.48x = 11,783,757,613.03
  5. Step 5: Solve for x
    x = 11,783,757,613.03/104,309.48
  6. Step 6: Final answer
    x = 112,969.19

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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.