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Finding the Fourth Proportional to 143,169.66, 197,542.80 and 86,579.82

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Solution

The fourth proportional to 143,169.66, 197,542.80 and 86,579.82 is: 119,461.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,169.66 : 197,542.80 = 86,579.82 : x
  2. Step 2: Convert to fraction form
    143,169.66/197,542.80 = 86,579.82/x
  3. Step 3: Cross multiply
    143,169.66x = 197,542.80 × 86,579.82
  4. Step 4: Simplify right side
    143,169.66x = 17,103,220,066.30
  5. Step 5: Solve for x
    x = 17,103,220,066.30/143,169.66
  6. Step 6: Final answer
    x = 119,461.20

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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.