Home / 113,147.78-156,144-62,163.80

Finding the Fourth Proportional to 113,147.78, 156,144 and 62,163.80

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Solution

The fourth proportional to 113,147.78, 156,144 and 62,163.80 is: 85,786.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,147.78 : 156,144 = 62,163.80 : x
  2. Step 2: Convert to fraction form
    113,147.78/156,144 = 62,163.80/x
  3. Step 3: Cross multiply
    113,147.78x = 156,144 × 62,163.80
  4. Step 4: Simplify right side
    113,147.78x = 9,706,504,387.20
  5. Step 5: Solve for x
    x = 9,706,504,387.20/113,147.78
  6. Step 6: Final answer
    x = 85,786.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.