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Finding the Fourth Proportional to 112,141.85, 168,170.85 and 45,559.54

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Solution

The fourth proportional to 112,141.85, 168,170.85 and 45,559.54 is: 68,322.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,141.85 : 168,170.85 = 45,559.54 : x
  2. Step 2: Convert to fraction form
    112,141.85/168,170.85 = 45,559.54/x
  3. Step 3: Cross multiply
    112,141.85x = 168,170.85 × 45,559.54
  4. Step 4: Simplify right side
    112,141.85x = 7,661,786,777.62
  5. Step 5: Solve for x
    x = 7,661,786,777.62/112,141.85
  6. Step 6: Final answer
    x = 68,322.28

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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.