Home / 171,603.20-257,141.64-77,999.60

Finding the Fourth Proportional to 171,603.20, 257,141.64 and 77,999.60

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Solution

The fourth proportional to 171,603.20, 257,141.64 and 77,999.60 is: 116,879.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,603.20 : 257,141.64 = 77,999.60 : x
  2. Step 2: Convert to fraction form
    171,603.20/257,141.64 = 77,999.60/x
  3. Step 3: Cross multiply
    171,603.20x = 257,141.64 × 77,999.60
  4. Step 4: Simplify right side
    171,603.20x = 20,056,945,063.34
  5. Step 5: Solve for x
    x = 20,056,945,063.34/171,603.20
  6. Step 6: Final answer
    x = 116,879.78

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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.