Home / 100,215.35-138,297.02-54,895.25

Finding the Fourth Proportional to 100,215.35, 138,297.02 and 54,895.25

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Solution

The fourth proportional to 100,215.35, 138,297.02 and 54,895.25 is: 75,755.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,215.35 : 138,297.02 = 54,895.25 : x
  2. Step 2: Convert to fraction form
    100,215.35/138,297.02 = 54,895.25/x
  3. Step 3: Cross multiply
    100,215.35x = 138,297.02 × 54,895.25
  4. Step 4: Simplify right side
    100,215.35x = 7,591,849,212.68
  5. Step 5: Solve for x
    x = 7,591,849,212.68/100,215.35
  6. Step 6: Final answer
    x = 75,755.35

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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.