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Finding the Fourth Proportional to 139,505.50, 209,258.25 and 46,018.54

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Solution

The fourth proportional to 139,505.50, 209,258.25 and 46,018.54 is: 69,027.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,505.50 : 209,258.25 = 46,018.54 : x
  2. Step 2: Convert to fraction form
    139,505.50/209,258.25 = 46,018.54/x
  3. Step 3: Cross multiply
    139,505.50x = 209,258.25 × 46,018.54
  4. Step 4: Simplify right side
    139,505.50x = 9,629,759,147.96
  5. Step 5: Solve for x
    x = 9,629,759,147.96/139,505.50
  6. Step 6: Final answer
    x = 69,027.81

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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.