Home / 254,170.90-381,259.09-76,679.45

Finding the Fourth Proportional to 254,170.90, 381,259.09 and 76,679.45

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Solution

The fourth proportional to 254,170.90, 381,259.09 and 76,679.45 is: 115,019.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,170.90 : 381,259.09 = 76,679.45 : x
  2. Step 2: Convert to fraction form
    254,170.90/381,259.09 = 76,679.45/x
  3. Step 3: Cross multiply
    254,170.90x = 381,259.09 × 76,679.45
  4. Step 4: Simplify right side
    254,170.90x = 29,234,735,039.01
  5. Step 5: Solve for x
    x = 29,234,735,039.01/254,170.90
  6. Step 6: Final answer
    x = 115,019.99

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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.