Home / 149,431.68-206,150.40-106,974.72

Finding the Fourth Proportional to 149,431.68, 206,150.40 and 106,974.72

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Solution

The fourth proportional to 149,431.68, 206,150.40 and 106,974.72 is: 147,578.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,431.68 : 206,150.40 = 106,974.72 : x
  2. Step 2: Convert to fraction form
    149,431.68/206,150.40 = 106,974.72/x
  3. Step 3: Cross multiply
    149,431.68x = 206,150.40 × 106,974.72
  4. Step 4: Simplify right side
    149,431.68x = 22,052,881,317.89
  5. Step 5: Solve for x
    x = 22,052,881,317.89/149,431.68
  6. Step 6: Final answer
    x = 147,578.35

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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.