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Finding the Fourth Proportional to 159,015, 219,436.02 and 91,029.72

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Solution

The fourth proportional to 159,015, 219,436.02 and 91,029.72 is: 125,618.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,015 : 219,436.02 = 91,029.72 : x
  2. Step 2: Convert to fraction form
    159,015/219,436.02 = 91,029.72/x
  3. Step 3: Cross multiply
    159,015x = 219,436.02 × 91,029.72
  4. Step 4: Simplify right side
    159,015x = 19,975,199,458.51
  5. Step 5: Solve for x
    x = 19,975,199,458.51/159,015
  6. Step 6: Final answer
    x = 125,618.33

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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.