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Finding the Fourth Proportional to 216,745.72, 299,169.26 and 126,119.25

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Solution

The fourth proportional to 216,745.72, 299,169.26 and 126,119.25 is: 174,079.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,745.72 : 299,169.26 = 126,119.25 : x
  2. Step 2: Convert to fraction form
    216,745.72/299,169.26 = 126,119.25/x
  3. Step 3: Cross multiply
    216,745.72x = 299,169.26 × 126,119.25
  4. Step 4: Simplify right side
    216,745.72x = 37,731,003,009.55
  5. Step 5: Solve for x
    x = 37,731,003,009.55/216,745.72
  6. Step 6: Final answer
    x = 174,079.58

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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.