Home / 127,385.08-191,078.08-38,639.36

Finding the Fourth Proportional to 127,385.08, 191,078.08 and 38,639.36

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Solution

The fourth proportional to 127,385.08, 191,078.08 and 38,639.36 is: 57,959.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,385.08 : 191,078.08 = 38,639.36 : x
  2. Step 2: Convert to fraction form
    127,385.08/191,078.08 = 38,639.36/x
  3. Step 3: Cross multiply
    127,385.08x = 191,078.08 × 38,639.36
  4. Step 4: Simplify right side
    127,385.08x = 7,383,134,721.23
  5. Step 5: Solve for x
    x = 7,383,134,721.23/127,385.08
  6. Step 6: Final answer
    x = 57,959.18

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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.