Home / 127,280.20-190,920.30-74,662.60

Finding the Fourth Proportional to 127,280.20, 190,920.30 and 74,662.60

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Solution

The fourth proportional to 127,280.20, 190,920.30 and 74,662.60 is: 111,993.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,280.20 : 190,920.30 = 74,662.60 : x
  2. Step 2: Convert to fraction form
    127,280.20/190,920.30 = 74,662.60/x
  3. Step 3: Cross multiply
    127,280.20x = 190,920.30 × 74,662.60
  4. Step 4: Simplify right side
    127,280.20x = 14,254,605,990.78
  5. Step 5: Solve for x
    x = 14,254,605,990.78/127,280.20
  6. Step 6: Final answer
    x = 111,993.90

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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.