Home / 142,344.29-196,429.25-81,917.07

Finding the Fourth Proportional to 142,344.29, 196,429.25 and 81,917.07

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Solution

The fourth proportional to 142,344.29, 196,429.25 and 81,917.07 is: 113,042.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,344.29 : 196,429.25 = 81,917.07 : x
  2. Step 2: Convert to fraction form
    142,344.29/196,429.25 = 81,917.07/x
  3. Step 3: Cross multiply
    142,344.29x = 196,429.25 × 81,917.07
  4. Step 4: Simplify right side
    142,344.29x = 16,090,909,195.40
  5. Step 5: Solve for x
    x = 16,090,909,195.40/142,344.29
  6. Step 6: Final answer
    x = 113,042.18

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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.