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Finding the Fourth Proportional to 103,858.70, 155,788.05 and 103,202.60

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Solution

The fourth proportional to 103,858.70, 155,788.05 and 103,202.60 is: 154,803.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,858.70 : 155,788.05 = 103,202.60 : x
  2. Step 2: Convert to fraction form
    103,858.70/155,788.05 = 103,202.60/x
  3. Step 3: Cross multiply
    103,858.70x = 155,788.05 × 103,202.60
  4. Step 4: Simplify right side
    103,858.70x = 16,077,731,808.93
  5. Step 5: Solve for x
    x = 16,077,731,808.93/103,858.70
  6. Step 6: Final answer
    x = 154,803.90

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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.