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Finding the Fourth Proportional to 143,418.65, 197,898.54 and 79,744.19

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Solution

The fourth proportional to 143,418.65, 197,898.54 and 79,744.19 is: 110,036.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,418.65 : 197,898.54 = 79,744.19 : x
  2. Step 2: Convert to fraction form
    143,418.65/197,898.54 = 79,744.19/x
  3. Step 3: Cross multiply
    143,418.65x = 197,898.54 × 79,744.19
  4. Step 4: Simplify right side
    143,418.65x = 15,781,258,774.48
  5. Step 5: Solve for x
    x = 15,781,258,774.48/143,418.65
  6. Step 6: Final answer
    x = 110,036.31

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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.