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Finding the Fourth Proportional to 86,542.60, 121,334.60 and 86,542.60

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Solution

The fourth proportional to 86,542.60, 121,334.60 and 86,542.60 is: 121,334.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,542.60 : 121,334.60 = 86,542.60 : x
  2. Step 2: Convert to fraction form
    86,542.60/121,334.60 = 86,542.60/x
  3. Step 3: Cross multiply
    86,542.60x = 121,334.60 × 86,542.60
  4. Step 4: Simplify right side
    86,542.60x = 10,500,611,753.96
  5. Step 5: Solve for x
    x = 10,500,611,753.96/86,542.60
  6. Step 6: Final answer
    x = 121,334.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.