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Finding the Fourth Proportional to 161,953.44, 223,478.64 and 90,336.48

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Solution

The fourth proportional to 161,953.44, 223,478.64 and 90,336.48 is: 124,654.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,953.44 : 223,478.64 = 90,336.48 : x
  2. Step 2: Convert to fraction form
    161,953.44/223,478.64 = 90,336.48/x
  3. Step 3: Cross multiply
    161,953.44x = 223,478.64 × 90,336.48
  4. Step 4: Simplify right side
    161,953.44x = 20,188,273,692.79
  5. Step 5: Solve for x
    x = 20,188,273,692.79/161,953.44
  6. Step 6: Final answer
    x = 124,654.80

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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.