Home / 117,135.20-175,702.26-90,519.86

Finding the Fourth Proportional to 117,135.20, 175,702.26 and 90,519.86

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Solution

The fourth proportional to 117,135.20, 175,702.26 and 90,519.86 is: 135,779.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,135.20 : 175,702.26 = 90,519.86 : x
  2. Step 2: Convert to fraction form
    117,135.20/175,702.26 = 90,519.86/x
  3. Step 3: Cross multiply
    117,135.20x = 175,702.26 × 90,519.86
  4. Step 4: Simplify right side
    117,135.20x = 15,904,543,976.88
  5. Step 5: Solve for x
    x = 15,904,543,976.88/117,135.20
  6. Step 6: Final answer
    x = 135,779.37

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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.