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Finding the Fourth Proportional to 159,921.91, 220,690.69 and 88,300.41

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Solution

The fourth proportional to 159,921.91, 220,690.69 and 88,300.41 is: 121,853.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,921.91 : 220,690.69 = 88,300.41 : x
  2. Step 2: Convert to fraction form
    159,921.91/220,690.69 = 88,300.41/x
  3. Step 3: Cross multiply
    159,921.91x = 220,690.69 × 88,300.41
  4. Step 4: Simplify right side
    159,921.91x = 19,487,078,410.18
  5. Step 5: Solve for x
    x = 19,487,078,410.18/159,921.91
  6. Step 6: Final answer
    x = 121,853.71

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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.