Home / 128,861.56-193,214.67-57,771.34

Finding the Fourth Proportional to 128,861.56, 193,214.67 and 57,771.34

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Solution

The fourth proportional to 128,861.56, 193,214.67 and 57,771.34 is: 86,622.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,861.56 : 193,214.67 = 57,771.34 : x
  2. Step 2: Convert to fraction form
    128,861.56/193,214.67 = 57,771.34/x
  3. Step 3: Cross multiply
    128,861.56x = 193,214.67 × 57,771.34
  4. Step 4: Simplify right side
    128,861.56x = 11,162,270,018.84
  5. Step 5: Solve for x
    x = 11,162,270,018.84/128,861.56
  6. Step 6: Final answer
    x = 86,622.19

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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.