Home / 205,936.60-308,904.90-87,611.80

Finding the Fourth Proportional to 205,936.60, 308,904.90 and 87,611.80

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Solution

The fourth proportional to 205,936.60, 308,904.90 and 87,611.80 is: 131,417.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,936.60 : 308,904.90 = 87,611.80 : x
  2. Step 2: Convert to fraction form
    205,936.60/308,904.90 = 87,611.80/x
  3. Step 3: Cross multiply
    205,936.60x = 308,904.90 × 87,611.80
  4. Step 4: Simplify right side
    205,936.60x = 27,063,714,317.82
  5. Step 5: Solve for x
    x = 27,063,714,317.82/205,936.60
  6. Step 6: Final answer
    x = 131,417.70

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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.