Home / 115,857.89-159,879.45-64,865.85

Finding the Fourth Proportional to 115,857.89, 159,879.45 and 64,865.85

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Solution

The fourth proportional to 115,857.89, 159,879.45 and 64,865.85 is: 89,512.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,857.89 : 159,879.45 = 64,865.85 : x
  2. Step 2: Convert to fraction form
    115,857.89/159,879.45 = 64,865.85/x
  3. Step 3: Cross multiply
    115,857.89x = 159,879.45 × 64,865.85
  4. Step 4: Simplify right side
    115,857.89x = 10,370,715,622.39
  5. Step 5: Solve for x
    x = 10,370,715,622.39/115,857.89
  6. Step 6: Final answer
    x = 89,512.39

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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.