Home / 142,791.36-197,057.16-86,191.68

Finding the Fourth Proportional to 142,791.36, 197,057.16 and 86,191.68

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Solution

The fourth proportional to 142,791.36, 197,057.16 and 86,191.68 is: 118,947.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,791.36 : 197,057.16 = 86,191.68 : x
  2. Step 2: Convert to fraction form
    142,791.36/197,057.16 = 86,191.68/x
  3. Step 3: Cross multiply
    142,791.36x = 197,057.16 × 86,191.68
  4. Step 4: Simplify right side
    142,791.36x = 16,984,687,676.43
  5. Step 5: Solve for x
    x = 16,984,687,676.43/142,791.36
  6. Step 6: Final answer
    x = 118,947.59

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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.