Home / 185,640.31-256,183.91-100,757.40

Finding the Fourth Proportional to 185,640.31, 256,183.91 and 100,757.40

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Solution

The fourth proportional to 185,640.31, 256,183.91 and 100,757.40 is: 139,045.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,640.31 : 256,183.91 = 100,757.40 : x
  2. Step 2: Convert to fraction form
    185,640.31/256,183.91 = 100,757.40/x
  3. Step 3: Cross multiply
    185,640.31x = 256,183.91 × 100,757.40
  4. Step 4: Simplify right side
    185,640.31x = 25,812,424,693.43
  5. Step 5: Solve for x
    x = 25,812,424,693.43/185,640.31
  6. Step 6: Final answer
    x = 139,045.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.