Home / 254,454.23-381,100-121,427.90

Finding the Fourth Proportional to 254,454.23, 381,100 and 121,427.90

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Solution

The fourth proportional to 254,454.23, 381,100 and 121,427.90 is: 181,864.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,454.23 : 381,100 = 121,427.90 : x
  2. Step 2: Convert to fraction form
    254,454.23/381,100 = 121,427.90/x
  3. Step 3: Cross multiply
    254,454.23x = 381,100 × 121,427.90
  4. Step 4: Simplify right side
    254,454.23x = 46,276,172,690
  5. Step 5: Solve for x
    x = 46,276,172,690/254,454.23
  6. Step 6: Final answer
    x = 181,864.43

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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.