Home / 101,427.60-139,922.94-65,629.15

Finding the Fourth Proportional to 101,427.60, 139,922.94 and 65,629.15

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Solution

The fourth proportional to 101,427.60, 139,922.94 and 65,629.15 is: 90,537.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,427.60 : 139,922.94 = 65,629.15 : x
  2. Step 2: Convert to fraction form
    101,427.60/139,922.94 = 65,629.15/x
  3. Step 3: Cross multiply
    101,427.60x = 139,922.94 × 65,629.15
  4. Step 4: Simplify right side
    101,427.60x = 9,183,023,617.70
  5. Step 5: Solve for x
    x = 9,183,023,617.70/101,427.60
  6. Step 6: Final answer
    x = 90,537.72

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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.