Home / 91,840.20-137,590.20-52,279.80

Finding the Fourth Proportional to 91,840.20, 137,590.20 and 52,279.80

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Solution

The fourth proportional to 91,840.20, 137,590.20 and 52,279.80 is: 78,322.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,840.20 : 137,590.20 = 52,279.80 : x
  2. Step 2: Convert to fraction form
    91,840.20/137,590.20 = 52,279.80/x
  3. Step 3: Cross multiply
    91,840.20x = 137,590.20 × 52,279.80
  4. Step 4: Simplify right side
    91,840.20x = 7,193,188,137.96
  5. Step 5: Solve for x
    x = 7,193,188,137.96/91,840.20
  6. Step 6: Final answer
    x = 78,322.87

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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.