Home / 127,386.30-191,079.90-38,640.54

Finding the Fourth Proportional to 127,386.30, 191,079.90 and 38,640.54

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Solution

The fourth proportional to 127,386.30, 191,079.90 and 38,640.54 is: 57,960.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,386.30 : 191,079.90 = 38,640.54 : x
  2. Step 2: Convert to fraction form
    127,386.30/191,079.90 = 38,640.54/x
  3. Step 3: Cross multiply
    127,386.30x = 191,079.90 × 38,640.54
  4. Step 4: Simplify right side
    127,386.30x = 7,383,430,519.15
  5. Step 5: Solve for x
    x = 7,383,430,519.15/127,386.30
  6. Step 6: Final answer
    x = 57,960.95

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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.