Home / 190,431.99-285,600.96-78,144.12

Finding the Fourth Proportional to 190,431.99, 285,600.96 and 78,144.12

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Solution

The fourth proportional to 190,431.99, 285,600.96 and 78,144.12 is: 117,196.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,431.99 : 285,600.96 = 78,144.12 : x
  2. Step 2: Convert to fraction form
    190,431.99/285,600.96 = 78,144.12/x
  3. Step 3: Cross multiply
    190,431.99x = 285,600.96 × 78,144.12
  4. Step 4: Simplify right side
    190,431.99x = 22,318,035,690.36
  5. Step 5: Solve for x
    x = 22,318,035,690.36/190,431.99
  6. Step 6: Final answer
    x = 117,196.88

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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.