Home / 115,928.40-173,662.20-66,622.80

Finding the Fourth Proportional to 115,928.40, 173,662.20 and 66,622.80

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Solution

The fourth proportional to 115,928.40, 173,662.20 and 66,622.80 is: 99,801.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,928.40 : 173,662.20 = 66,622.80 : x
  2. Step 2: Convert to fraction form
    115,928.40/173,662.20 = 66,622.80/x
  3. Step 3: Cross multiply
    115,928.40x = 173,662.20 × 66,622.80
  4. Step 4: Simplify right side
    115,928.40x = 11,569,862,018.16
  5. Step 5: Solve for x
    x = 11,569,862,018.16/115,928.40
  6. Step 6: Final answer
    x = 99,801.79

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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.