Home / 121,660.25-166,671.74-117,111.75

Finding the Fourth Proportional to 121,660.25, 166,671.74 and 117,111.75

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Solution

The fourth proportional to 121,660.25, 166,671.74 and 117,111.75 is: 160,440.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,660.25 : 166,671.74 = 117,111.75 : x
  2. Step 2: Convert to fraction form
    121,660.25/166,671.74 = 117,111.75/x
  3. Step 3: Cross multiply
    121,660.25x = 166,671.74 × 117,111.75
  4. Step 4: Simplify right side
    121,660.25x = 19,519,218,606.37
  5. Step 5: Solve for x
    x = 19,519,218,606.37/121,660.25
  6. Step 6: Final answer
    x = 160,440.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.