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Finding the Fourth Proportional to 161,813, 223,309.60 and 90,193.52

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Solution

The fourth proportional to 161,813, 223,309.60 and 90,193.52 is: 124,471.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,813 : 223,309.60 = 90,193.52 : x
  2. Step 2: Convert to fraction form
    161,813/223,309.60 = 90,193.52/x
  3. Step 3: Cross multiply
    161,813x = 223,309.60 × 90,193.52
  4. Step 4: Simplify right side
    161,813x = 20,141,078,873.79
  5. Step 5: Solve for x
    x = 20,141,078,873.79/161,813
  6. Step 6: Final answer
    x = 124,471.33

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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.