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Finding the Fourth Proportional to 216,735.16, 325,124.62 and 81,765.37

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Solution

The fourth proportional to 216,735.16, 325,124.62 and 81,765.37 is: 122,656.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,735.16 : 325,124.62 = 81,765.37 : x
  2. Step 2: Convert to fraction form
    216,735.16/325,124.62 = 81,765.37/x
  3. Step 3: Cross multiply
    216,735.16x = 325,124.62 × 81,765.37
  4. Step 4: Simplify right side
    216,735.16x = 26,583,934,850.41
  5. Step 5: Solve for x
    x = 26,583,934,850.41/216,735.16
  6. Step 6: Final answer
    x = 122,656.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.