Home / 128,181.60-192,269.87-38,285.20

Finding the Fourth Proportional to 128,181.60, 192,269.87 and 38,285.20

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Solution

The fourth proportional to 128,181.60, 192,269.87 and 38,285.20 is: 57,427.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,181.60 : 192,269.87 = 38,285.20 : x
  2. Step 2: Convert to fraction form
    128,181.60/192,269.87 = 38,285.20/x
  3. Step 3: Cross multiply
    128,181.60x = 192,269.87 × 38,285.20
  4. Step 4: Simplify right side
    128,181.60x = 7,361,089,537.89
  5. Step 5: Solve for x
    x = 7,361,089,537.89/128,181.60
  6. Step 6: Final answer
    x = 57,427.04

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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.