Home / 254,139.96-381,259.62-76,661.40

Finding the Fourth Proportional to 254,139.96, 381,259.62 and 76,661.40

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Solution

The fourth proportional to 254,139.96, 381,259.62 and 76,661.40 is: 115,007.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,139.96 : 381,259.62 = 76,661.40 : x
  2. Step 2: Convert to fraction form
    254,139.96/381,259.62 = 76,661.40/x
  3. Step 3: Cross multiply
    254,139.96x = 381,259.62 × 76,661.40
  4. Step 4: Simplify right side
    254,139.96x = 29,227,896,232.67
  5. Step 5: Solve for x
    x = 29,227,896,232.67/254,139.96
  6. Step 6: Final answer
    x = 115,007.09

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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.