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Finding the Fourth Proportional to 100,069.70, 149,740.05 and 73,825.70

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Solution

The fourth proportional to 100,069.70, 149,740.05 and 73,825.70 is: 110,469.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,069.70 : 149,740.05 = 73,825.70 : x
  2. Step 2: Convert to fraction form
    100,069.70/149,740.05 = 73,825.70/x
  3. Step 3: Cross multiply
    100,069.70x = 149,740.05 × 73,825.70
  4. Step 4: Simplify right side
    100,069.70x = 11,054,664,009.29
  5. Step 5: Solve for x
    x = 11,054,664,009.29/100,069.70
  6. Step 6: Final answer
    x = 110,469.64

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1.5x scale

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.