Home / 103,644.23-143,016.30-65,389.34

Finding the Fourth Proportional to 103,644.23, 143,016.30 and 65,389.34

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Solution

The fourth proportional to 103,644.23, 143,016.30 and 65,389.34 is: 90,229.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,644.23 : 143,016.30 = 65,389.34 : x
  2. Step 2: Convert to fraction form
    103,644.23/143,016.30 = 65,389.34/x
  3. Step 3: Cross multiply
    103,644.23x = 143,016.30 × 65,389.34
  4. Step 4: Simplify right side
    103,644.23x = 9,351,741,823.78
  5. Step 5: Solve for x
    x = 9,351,741,823.78/103,644.23
  6. Step 6: Final answer
    x = 90,229.26

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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.