Home / 181,939.85-251,078.71-100,271.05

Finding the Fourth Proportional to 181,939.85, 251,078.71 and 100,271.05

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Solution

The fourth proportional to 181,939.85, 251,078.71 and 100,271.05 is: 138,374.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,939.85 : 251,078.71 = 100,271.05 : x
  2. Step 2: Convert to fraction form
    181,939.85/251,078.71 = 100,271.05/x
  3. Step 3: Cross multiply
    181,939.85x = 251,078.71 × 100,271.05
  4. Step 4: Simplify right side
    181,939.85x = 25,175,925,915.43
  5. Step 5: Solve for x
    x = 25,175,925,915.43/181,939.85
  6. Step 6: Final answer
    x = 138,374.99

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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.