Home / 149,322,211.60-206,064,609-80,644,579.60

Finding the Fourth Proportional to 149,322,211.60, 206,064,609 and 80,644,579.60

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Solution

The fourth proportional to 149,322,211.60, 206,064,609 and 80,644,579.60 is: 111,289,496.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,322,211.60 : 206,064,609 = 80,644,579.60 : x
  2. Step 2: Convert to fraction form
    149,322,211.60/206,064,609 = 80,644,579.60/x
  3. Step 3: Cross multiply
    149,322,211.60x = 206,064,609 × 80,644,579.60
  4. Step 4: Simplify right side
    149,322,211.60x = 16,617,993,763,243,376
  5. Step 5: Solve for x
    x = 16,617,993,763,243,376/149,322,211.60
  6. Step 6: Final answer
    x = 111,289,496.62

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.