Home / 254,171.90-381,260.59-76,680.45

Finding the Fourth Proportional to 254,171.90, 381,260.59 and 76,680.45

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Solution

The fourth proportional to 254,171.90, 381,260.59 and 76,680.45 is: 115,021.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,171.90 : 381,260.59 = 76,680.45 : x
  2. Step 2: Convert to fraction form
    254,171.90/381,260.59 = 76,680.45/x
  3. Step 3: Cross multiply
    254,171.90x = 381,260.59 × 76,680.45
  4. Step 4: Simplify right side
    254,171.90x = 29,235,233,608.47
  5. Step 5: Solve for x
    x = 29,235,233,608.47/254,171.90
  6. Step 6: Final answer
    x = 115,021.50

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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.