Home / 99,986.60-149,736.90-53,136.20

Finding the Fourth Proportional to 99,986.60, 149,736.90 and 53,136.20

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Solution

The fourth proportional to 99,986.60, 149,736.90 and 53,136.20 is: 79,575.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,986.60 : 149,736.90 = 53,136.20 : x
  2. Step 2: Convert to fraction form
    99,986.60/149,736.90 = 53,136.20/x
  3. Step 3: Cross multiply
    99,986.60x = 149,736.90 × 53,136.20
  4. Step 4: Simplify right side
    99,986.60x = 7,956,449,865.78
  5. Step 5: Solve for x
    x = 7,956,449,865.78/99,986.60
  6. Step 6: Final answer
    x = 79,575.16

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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.