Home / 100,268.48-138,363.18-54,939.26

Finding the Fourth Proportional to 100,268.48, 138,363.18 and 54,939.26

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Solution

The fourth proportional to 100,268.48, 138,363.18 and 54,939.26 is: 75,812.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,268.48 : 138,363.18 = 54,939.26 : x
  2. Step 2: Convert to fraction form
    100,268.48/138,363.18 = 54,939.26/x
  3. Step 3: Cross multiply
    100,268.48x = 138,363.18 × 54,939.26
  4. Step 4: Simplify right side
    100,268.48x = 7,601,570,720.45
  5. Step 5: Solve for x
    x = 7,601,570,720.45/100,268.48
  6. Step 6: Final answer
    x = 75,812.17

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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.