Home / 103,379.19-155,129.72-43,418.18

Finding the Fourth Proportional to 103,379.19, 155,129.72 and 43,418.18

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Solution

The fourth proportional to 103,379.19, 155,129.72 and 43,418.18 is: 65,152.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,379.19 : 155,129.72 = 43,418.18 : x
  2. Step 2: Convert to fraction form
    103,379.19/155,129.72 = 43,418.18/x
  3. Step 3: Cross multiply
    103,379.19x = 155,129.72 × 43,418.18
  4. Step 4: Simplify right side
    103,379.19x = 6,735,449,889.22
  5. Step 5: Solve for x
    x = 6,735,449,889.22/103,379.19
  6. Step 6: Final answer
    x = 65,152.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.