Home / 100,201.90-138,280.18-54,879.06

Finding the Fourth Proportional to 100,201.90, 138,280.18 and 54,879.06

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Solution

The fourth proportional to 100,201.90, 138,280.18 and 54,879.06 is: 75,733.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,201.90 : 138,280.18 = 54,879.06 : x
  2. Step 2: Convert to fraction form
    100,201.90/138,280.18 = 54,879.06/x
  3. Step 3: Cross multiply
    100,201.90x = 138,280.18 × 54,879.06
  4. Step 4: Simplify right side
    100,201.90x = 7,588,686,295.03
  5. Step 5: Solve for x
    x = 7,588,686,295.03/100,201.90
  6. Step 6: Final answer
    x = 75,733.96

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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.