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Finding the Fourth Proportional to 103,394.25, 155,090.79 and 40,258.29

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Solution

The fourth proportional to 103,394.25, 155,090.79 and 40,258.29 is: 60,387.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,394.25 : 155,090.79 = 40,258.29 : x
  2. Step 2: Convert to fraction form
    103,394.25/155,090.79 = 40,258.29/x
  3. Step 3: Cross multiply
    103,394.25x = 155,090.79 × 40,258.29
  4. Step 4: Simplify right side
    103,394.25x = 6,243,690,000.15
  5. Step 5: Solve for x
    x = 6,243,690,000.15/103,394.25
  6. Step 6: Final answer
    x = 60,387.21

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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.