Home / 100,206.36-138,284.74-54,887.16

Finding the Fourth Proportional to 100,206.36, 138,284.74 and 54,887.16

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Solution

The fourth proportional to 100,206.36, 138,284.74 and 54,887.16 is: 75,744.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,206.36 : 138,284.74 = 54,887.16 : x
  2. Step 2: Convert to fraction form
    100,206.36/138,284.74 = 54,887.16/x
  3. Step 3: Cross multiply
    100,206.36x = 138,284.74 × 54,887.16
  4. Step 4: Simplify right side
    100,206.36x = 7,590,056,512.72
  5. Step 5: Solve for x
    x = 7,590,056,512.72/100,206.36
  6. Step 6: Final answer
    x = 75,744.26

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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.