Home / 190,022.88-262,190.52-121,138.56

Finding the Fourth Proportional to 190,022.88, 262,190.52 and 121,138.56

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Solution

The fourth proportional to 190,022.88, 262,190.52 and 121,138.56 is: 167,145.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,022.88 : 262,190.52 = 121,138.56 : x
  2. Step 2: Convert to fraction form
    190,022.88/262,190.52 = 121,138.56/x
  3. Step 3: Cross multiply
    190,022.88x = 262,190.52 × 121,138.56
  4. Step 4: Simplify right side
    190,022.88x = 31,761,382,038.45
  5. Step 5: Solve for x
    x = 31,761,382,038.45/190,022.88
  6. Step 6: Final answer
    x = 167,145.04

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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.