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Finding the Fourth Proportional to 69,164.60, 103,746.90 and 68,727.20

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Solution

The fourth proportional to 69,164.60, 103,746.90 and 68,727.20 is: 103,090.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,164.60 : 103,746.90 = 68,727.20 : x
  2. Step 2: Convert to fraction form
    69,164.60/103,746.90 = 68,727.20/x
  3. Step 3: Cross multiply
    69,164.60x = 103,746.90 × 68,727.20
  4. Step 4: Simplify right side
    69,164.60x = 7,130,233,945.68
  5. Step 5: Solve for x
    x = 7,130,233,945.68/69,164.60
  6. Step 6: Final answer
    x = 103,090.80

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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.