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Finding the Fourth Proportional to 163,745.69, 225,968.99 and 91,147.00

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Solution

The fourth proportional to 163,745.69, 225,968.99 and 91,147.00 is: 125,782.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,745.69 : 225,968.99 = 91,147.00 : x
  2. Step 2: Convert to fraction form
    163,745.69/225,968.99 = 91,147.00/x
  3. Step 3: Cross multiply
    163,745.69x = 225,968.99 × 91,147.00
  4. Step 4: Simplify right side
    163,745.69x = 20,596,395,447.27
  5. Step 5: Solve for x
    x = 20,596,395,447.27/163,745.69
  6. Step 6: Final answer
    x = 125,782.83

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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.