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Finding the Fourth Proportional to 159,378.96, 219,912.90 and 98,964.30

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Solution

The fourth proportional to 159,378.96, 219,912.90 and 98,964.30 is: 136,552.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,378.96 : 219,912.90 = 98,964.30 : x
  2. Step 2: Convert to fraction form
    159,378.96/219,912.90 = 98,964.30/x
  3. Step 3: Cross multiply
    159,378.96x = 219,912.90 × 98,964.30
  4. Step 4: Simplify right side
    159,378.96x = 21,763,526,209.47
  5. Step 5: Solve for x
    x = 21,763,526,209.47/159,378.96
  6. Step 6: Final answer
    x = 136,552.07

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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.