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Finding the Fourth Proportional to 103,402.26, 155,114.18 and 28,522.42

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Solution

The fourth proportional to 103,402.26, 155,114.18 and 28,522.42 is: 42,786.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,402.26 : 155,114.18 = 28,522.42 : x
  2. Step 2: Convert to fraction form
    103,402.26/155,114.18 = 28,522.42/x
  3. Step 3: Cross multiply
    103,402.26x = 155,114.18 × 28,522.42
  4. Step 4: Simplify right side
    103,402.26x = 4,424,230,871.73
  5. Step 5: Solve for x
    x = 4,424,230,871.73/103,402.26
  6. Step 6: Final answer
    x = 42,786.60

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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.