Home / 254,714.60-381,845.91-128,189.36

Finding the Fourth Proportional to 254,714.60, 381,845.91 and 128,189.36

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Solution

The fourth proportional to 254,714.60, 381,845.91 and 128,189.36 is: 192,170.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,714.60 : 381,845.91 = 128,189.36 : x
  2. Step 2: Convert to fraction form
    254,714.60/381,845.91 = 128,189.36/x
  3. Step 3: Cross multiply
    254,714.60x = 381,845.91 × 128,189.36
  4. Step 4: Simplify right side
    254,714.60x = 48,948,582,821.52
  5. Step 5: Solve for x
    x = 48,948,582,821.52/254,714.60
  6. Step 6: Final answer
    x = 192,170.31

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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.