Home / 215,999.79-324,144.33-89,640.15

Finding the Fourth Proportional to 215,999.79, 324,144.33 and 89,640.15

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Solution

The fourth proportional to 215,999.79, 324,144.33 and 89,640.15 is: 134,520.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,999.79 : 324,144.33 = 89,640.15 : x
  2. Step 2: Convert to fraction form
    215,999.79/324,144.33 = 89,640.15/x
  3. Step 3: Cross multiply
    215,999.79x = 324,144.33 × 89,640.15
  4. Step 4: Simplify right side
    215,999.79x = 29,056,346,362.85
  5. Step 5: Solve for x
    x = 29,056,346,362.85/215,999.79
  6. Step 6: Final answer
    x = 134,520.25

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1.5x scale

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.