Home / 78,301.28-117,451.36-19,136.44

Finding the Fourth Proportional to 78,301.28, 117,451.36 and 19,136.44

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Solution

The fourth proportional to 78,301.28, 117,451.36 and 19,136.44 is: 28,704.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,301.28 : 117,451.36 = 19,136.44 : x
  2. Step 2: Convert to fraction form
    78,301.28/117,451.36 = 19,136.44/x
  3. Step 3: Cross multiply
    78,301.28x = 117,451.36 × 19,136.44
  4. Step 4: Simplify right side
    78,301.28x = 2,247,600,903.56
  5. Step 5: Solve for x
    x = 2,247,600,903.56/78,301.28
  6. Step 6: Final answer
    x = 28,704.52

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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.