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Finding the Fourth Proportional to 161,752.99, 223,216.11 and 90,131.49

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Solution

The fourth proportional to 161,752.99, 223,216.11 and 90,131.49 is: 124,379.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,752.99 : 223,216.11 = 90,131.49 : x
  2. Step 2: Convert to fraction form
    161,752.99/223,216.11 = 90,131.49/x
  3. Step 3: Cross multiply
    161,752.99x = 223,216.11 × 90,131.49
  4. Step 4: Simplify right side
    161,752.99x = 20,118,800,586.30
  5. Step 5: Solve for x
    x = 20,118,800,586.30/161,752.99
  6. Step 6: Final answer
    x = 124,379.78

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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.