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Finding the Fourth Proportional to 216,745.89, 299,169.50 and 126,119.42

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Solution

The fourth proportional to 216,745.89, 299,169.50 and 126,119.42 is: 174,079.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,745.89 : 299,169.50 = 126,119.42 : x
  2. Step 2: Convert to fraction form
    216,745.89/299,169.50 = 126,119.42/x
  3. Step 3: Cross multiply
    216,745.89x = 299,169.50 × 126,119.42
  4. Step 4: Simplify right side
    216,745.89x = 37,731,081,695.25
  5. Step 5: Solve for x
    x = 37,731,081,695.25/216,745.89
  6. Step 6: Final answer
    x = 174,079.80

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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.