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Finding the Fourth Proportional to 103,529.10, 154,965.60 and 74,004.60

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Solution

The fourth proportional to 103,529.10, 154,965.60 and 74,004.60 is: 110,772.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,529.10 : 154,965.60 = 74,004.60 : x
  2. Step 2: Convert to fraction form
    103,529.10/154,965.60 = 74,004.60/x
  3. Step 3: Cross multiply
    103,529.10x = 154,965.60 × 74,004.60
  4. Step 4: Simplify right side
    103,529.10x = 11,468,167,241.76
  5. Step 5: Solve for x
    x = 11,468,167,241.76/103,529.10
  6. Step 6: Final answer
    x = 110,772.40

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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.