Home / 256,787.88-384,973.14-107,139.66

Finding the Fourth Proportional to 256,787.88, 384,973.14 and 107,139.66

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Solution

The fourth proportional to 256,787.88, 384,973.14 and 107,139.66 is: 160,622.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,787.88 : 384,973.14 = 107,139.66 : x
  2. Step 2: Convert to fraction form
    256,787.88/384,973.14 = 107,139.66/x
  3. Step 3: Cross multiply
    256,787.88x = 384,973.14 × 107,139.66
  4. Step 4: Simplify right side
    256,787.88x = 41,245,891,328.73
  5. Step 5: Solve for x
    x = 41,245,891,328.73/256,787.88
  6. Step 6: Final answer
    x = 160,622.42

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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.