Home / 150,879.72-208,213.16-81,968.60

Finding the Fourth Proportional to 150,879.72, 208,213.16 and 81,968.60

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Solution

The fourth proportional to 150,879.72, 208,213.16 and 81,968.60 is: 113,116.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,879.72 : 208,213.16 = 81,968.60 : x
  2. Step 2: Convert to fraction form
    150,879.72/208,213.16 = 81,968.60/x
  3. Step 3: Cross multiply
    150,879.72x = 208,213.16 × 81,968.60
  4. Step 4: Simplify right side
    150,879.72x = 17,066,941,226.78
  5. Step 5: Solve for x
    x = 17,066,941,226.78/150,879.72
  6. Step 6: Final answer
    x = 113,116.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.