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Finding the Fourth Proportional to 152,580.96, 210,550.32 and 85,500

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Solution

The fourth proportional to 152,580.96, 210,550.32 and 85,500 is: 117,983.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,580.96 : 210,550.32 = 85,500 : x
  2. Step 2: Convert to fraction form
    152,580.96/210,550.32 = 85,500/x
  3. Step 3: Cross multiply
    152,580.96x = 210,550.32 × 85,500
  4. Step 4: Simplify right side
    152,580.96x = 18,002,052,360
  5. Step 5: Solve for x
    x = 18,002,052,360/152,580.96
  6. Step 6: Final answer
    x = 117,983.61

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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.