Home / 181,389.38-250,321.60-100,820.30

Finding the Fourth Proportional to 181,389.38, 250,321.60 and 100,820.30

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Solution

The fourth proportional to 181,389.38, 250,321.60 and 100,820.30 is: 139,134.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,389.38 : 250,321.60 = 100,820.30 : x
  2. Step 2: Convert to fraction form
    181,389.38/250,321.60 = 100,820.30/x
  3. Step 3: Cross multiply
    181,389.38x = 250,321.60 × 100,820.30
  4. Step 4: Simplify right side
    181,389.38x = 25,237,498,808.48
  5. Step 5: Solve for x
    x = 25,237,498,808.48/181,389.38
  6. Step 6: Final answer
    x = 139,134.38

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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.