Home / 254,181.20-381,274.56-76,689.76

Finding the Fourth Proportional to 254,181.20, 381,274.56 and 76,689.76

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Solution

The fourth proportional to 254,181.20, 381,274.56 and 76,689.76 is: 115,035.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,181.20 : 381,274.56 = 76,689.76 : x
  2. Step 2: Convert to fraction form
    254,181.20/381,274.56 = 76,689.76/x
  3. Step 3: Cross multiply
    254,181.20x = 381,274.56 × 76,689.76
  4. Step 4: Simplify right side
    254,181.20x = 29,239,854,500.51
  5. Step 5: Solve for x
    x = 29,239,854,500.51/254,181.20
  6. Step 6: Final answer
    x = 115,035.47

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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.