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Finding the Fourth Proportional to 159,168, 219,683.04 and 91,230.51

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Solution

The fourth proportional to 159,168, 219,683.04 and 91,230.51 is: 125,915.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,168 : 219,683.04 = 91,230.51 : x
  2. Step 2: Convert to fraction form
    159,168/219,683.04 = 91,230.51/x
  3. Step 3: Cross multiply
    159,168x = 219,683.04 × 91,230.51
  4. Step 4: Simplify right side
    159,168x = 20,041,795,435.44
  5. Step 5: Solve for x
    x = 20,041,795,435.44/159,168
  6. Step 6: Final answer
    x = 125,915.98

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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.