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Finding the Fourth Proportional to 159,009.26, 219,422.43 and 91,026.77

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Solution

The fourth proportional to 159,009.26, 219,422.43 and 91,026.77 is: 125,611.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,009.26 : 219,422.43 = 91,026.77 : x
  2. Step 2: Convert to fraction form
    159,009.26/219,422.43 = 91,026.77/x
  3. Step 3: Cross multiply
    159,009.26x = 219,422.43 × 91,026.77
  4. Step 4: Simplify right side
    159,009.26x = 19,973,313,971.34
  5. Step 5: Solve for x
    x = 19,973,313,971.34/159,009.26
  6. Step 6: Final answer
    x = 125,611.02

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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.