Home / 201,961.60-302,942.40-131,459.20

Finding the Fourth Proportional to 201,961.60, 302,942.40 and 131,459.20

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Solution

The fourth proportional to 201,961.60, 302,942.40 and 131,459.20 is: 197,188.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,961.60 : 302,942.40 = 131,459.20 : x
  2. Step 2: Convert to fraction form
    201,961.60/302,942.40 = 131,459.20/x
  3. Step 3: Cross multiply
    201,961.60x = 302,942.40 × 131,459.20
  4. Step 4: Simplify right side
    201,961.60x = 39,824,565,550.08
  5. Step 5: Solve for x
    x = 39,824,565,550.08/201,961.60
  6. Step 6: Final answer
    x = 197,188.80

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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.