Home / 100,272.13-138,376.50-54,954.30

Finding the Fourth Proportional to 100,272.13, 138,376.50 and 54,954.30

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Solution

The fourth proportional to 100,272.13, 138,376.50 and 54,954.30 is: 75,837.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,272.13 : 138,376.50 = 54,954.30 : x
  2. Step 2: Convert to fraction form
    100,272.13/138,376.50 = 54,954.30/x
  3. Step 3: Cross multiply
    100,272.13x = 138,376.50 × 54,954.30
  4. Step 4: Simplify right side
    100,272.13x = 7,604,383,537.53
  5. Step 5: Solve for x
    x = 7,604,383,537.53/100,272.13
  6. Step 6: Final answer
    x = 75,837.46

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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.