Home / 95,081.70-131,072.97-72,381.12

Finding the Fourth Proportional to 95,081.70, 131,072.97 and 72,381.12

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Solution

The fourth proportional to 95,081.70, 131,072.97 and 72,381.12 is: 99,779.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,081.70 : 131,072.97 = 72,381.12 : x
  2. Step 2: Convert to fraction form
    95,081.70/131,072.97 = 72,381.12/x
  3. Step 3: Cross multiply
    95,081.70x = 131,072.97 × 72,381.12
  4. Step 4: Simplify right side
    95,081.70x = 9,487,208,370.33
  5. Step 5: Solve for x
    x = 9,487,208,370.33/95,081.70
  6. Step 6: Final answer
    x = 99,779.54

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1.5x scale

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.