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Finding the Fourth Proportional to 161,679.63, 223,124.79 and 90,059.64

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Solution

The fourth proportional to 161,679.63, 223,124.79 and 90,059.64 is: 124,286.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,679.63 : 223,124.79 = 90,059.64 : x
  2. Step 2: Convert to fraction form
    161,679.63/223,124.79 = 90,059.64/x
  3. Step 3: Cross multiply
    161,679.63x = 223,124.79 × 90,059.64
  4. Step 4: Simplify right side
    161,679.63x = 20,094,538,262.48
  5. Step 5: Solve for x
    x = 20,094,538,262.48/161,679.63
  6. Step 6: Final answer
    x = 124,286.15

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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.