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Finding the Fourth Proportional to 159,601.31, 220,251.35 and 87,983.90

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Solution

The fourth proportional to 159,601.31, 220,251.35 and 87,983.90 is: 121,418.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,601.31 : 220,251.35 = 87,983.90 : x
  2. Step 2: Convert to fraction form
    159,601.31/220,251.35 = 87,983.90/x
  3. Step 3: Cross multiply
    159,601.31x = 220,251.35 × 87,983.90
  4. Step 4: Simplify right side
    159,601.31x = 19,378,572,313.35
  5. Step 5: Solve for x
    x = 19,378,572,313.35/159,601.31
  6. Step 6: Final answer
    x = 121,418.63

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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.