Home / 126,905.40-190,285.20-38,145.60

Finding the Fourth Proportional to 126,905.40, 190,285.20 and 38,145.60

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Solution

The fourth proportional to 126,905.40, 190,285.20 and 38,145.60 is: 57,196.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,905.40 : 190,285.20 = 38,145.60 : x
  2. Step 2: Convert to fraction form
    126,905.40/190,285.20 = 38,145.60/x
  3. Step 3: Cross multiply
    126,905.40x = 190,285.20 × 38,145.60
  4. Step 4: Simplify right side
    126,905.40x = 7,258,543,125.12
  5. Step 5: Solve for x
    x = 7,258,543,125.12/126,905.40
  6. Step 6: Final answer
    x = 57,196.49

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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.