Home / 127,385.46-191,078.64-38,639.73

Finding the Fourth Proportional to 127,385.46, 191,078.64 and 38,639.73

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Solution

The fourth proportional to 127,385.46, 191,078.64 and 38,639.73 is: 57,959.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,385.46 : 191,078.64 = 38,639.73 : x
  2. Step 2: Convert to fraction form
    127,385.46/191,078.64 = 38,639.73/x
  3. Step 3: Cross multiply
    127,385.46x = 191,078.64 × 38,639.73
  4. Step 4: Simplify right side
    127,385.46x = 7,383,227,058.37
  5. Step 5: Solve for x
    x = 7,383,227,058.37/127,385.46
  6. Step 6: Final answer
    x = 57,959.73

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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.