Home / 205,948.60-308,922.90-87,623.80

Finding the Fourth Proportional to 205,948.60, 308,922.90 and 87,623.80

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Solution

The fourth proportional to 205,948.60, 308,922.90 and 87,623.80 is: 131,435.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,948.60 : 308,922.90 = 87,623.80 : x
  2. Step 2: Convert to fraction form
    205,948.60/308,922.90 = 87,623.80/x
  3. Step 3: Cross multiply
    205,948.60x = 308,922.90 × 87,623.80
  4. Step 4: Simplify right side
    205,948.60x = 27,068,998,405.02
  5. Step 5: Solve for x
    x = 27,068,998,405.02/205,948.60
  6. Step 6: Final answer
    x = 131,435.70

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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.