Home / 127,231.40-190,847.10-120,816.20

Finding the Fourth Proportional to 127,231.40, 190,847.10 and 120,816.20

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Solution

The fourth proportional to 127,231.40, 190,847.10 and 120,816.20 is: 181,224.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,231.40 : 190,847.10 = 120,816.20 : x
  2. Step 2: Convert to fraction form
    127,231.40/190,847.10 = 120,816.20/x
  3. Step 3: Cross multiply
    127,231.40x = 190,847.10 × 120,816.20
  4. Step 4: Simplify right side
    127,231.40x = 23,057,421,403.02
  5. Step 5: Solve for x
    x = 23,057,421,403.02/127,231.40
  6. Step 6: Final answer
    x = 181,224.30

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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.