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Finding the Fourth Proportional to 103,815.20, 155,504.10 and 103,815.20

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Solution

The fourth proportional to 103,815.20, 155,504.10 and 103,815.20 is: 155,504.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,815.20 : 155,504.10 = 103,815.20 : x
  2. Step 2: Convert to fraction form
    103,815.20/155,504.10 = 103,815.20/x
  3. Step 3: Cross multiply
    103,815.20x = 155,504.10 × 103,815.20
  4. Step 4: Simplify right side
    103,815.20x = 16,143,689,242.32
  5. Step 5: Solve for x
    x = 16,143,689,242.32/103,815.20
  6. Step 6: Final answer
    x = 155,504.10

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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.