Home / 168,087.51-231,995.18-100,144.28

Finding the Fourth Proportional to 168,087.51, 231,995.18 and 100,144.28

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Solution

The fourth proportional to 168,087.51, 231,995.18 and 100,144.28 is: 138,219.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,087.51 : 231,995.18 = 100,144.28 : x
  2. Step 2: Convert to fraction form
    168,087.51/231,995.18 = 100,144.28/x
  3. Step 3: Cross multiply
    168,087.51x = 231,995.18 × 100,144.28
  4. Step 4: Simplify right side
    168,087.51x = 23,232,991,094.92
  5. Step 5: Solve for x
    x = 23,232,991,094.92/168,087.51
  6. Step 6: Final answer
    x = 138,219.62

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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.