Home / 142,579.71-196,780.73-82,138.59

Finding the Fourth Proportional to 142,579.71, 196,780.73 and 82,138.59

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Solution

The fourth proportional to 142,579.71, 196,780.73 and 82,138.59 is: 113,363.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,579.71 : 196,780.73 = 82,138.59 : x
  2. Step 2: Convert to fraction form
    142,579.71/196,780.73 = 82,138.59/x
  3. Step 3: Cross multiply
    142,579.71x = 196,780.73 × 82,138.59
  4. Step 4: Simplify right side
    142,579.71x = 16,163,291,290.68
  5. Step 5: Solve for x
    x = 16,163,291,290.68/142,579.71
  6. Step 6: Final answer
    x = 113,363.19

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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.