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Finding the Fourth Proportional to 161,960.31, 223,502.63 and 90,338.49

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Solution

The fourth proportional to 161,960.31, 223,502.63 and 90,338.49 is: 124,665.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,960.31 : 223,502.63 = 90,338.49 : x
  2. Step 2: Convert to fraction form
    161,960.31/223,502.63 = 90,338.49/x
  3. Step 3: Cross multiply
    161,960.31x = 223,502.63 × 90,338.49
  4. Step 4: Simplify right side
    161,960.31x = 20,190,889,653.54
  5. Step 5: Solve for x
    x = 20,190,889,653.54/161,960.31
  6. Step 6: Final answer
    x = 124,665.66

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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.