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Finding the Fourth Proportional to 159,520.37, 220,142.73 and 87,905.00

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Solution

The fourth proportional to 159,520.37, 220,142.73 and 87,905.00 is: 121,311.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,520.37 : 220,142.73 = 87,905.00 : x
  2. Step 2: Convert to fraction form
    159,520.37/220,142.73 = 87,905.00/x
  3. Step 3: Cross multiply
    159,520.37x = 220,142.73 × 87,905.00
  4. Step 4: Simplify right side
    159,520.37x = 19,351,645,579.94
  5. Step 5: Solve for x
    x = 19,351,645,579.94/159,520.37
  6. Step 6: Final answer
    x = 121,311.44

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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.