Home / 100,466.27-138,642.57-55,146.15

Finding the Fourth Proportional to 100,466.27, 138,642.57 and 55,146.15

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Solution

The fourth proportional to 100,466.27, 138,642.57 and 55,146.15 is: 76,101.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,466.27 : 138,642.57 = 55,146.15 : x
  2. Step 2: Convert to fraction form
    100,466.27/138,642.57 = 55,146.15/x
  3. Step 3: Cross multiply
    100,466.27x = 138,642.57 × 55,146.15
  4. Step 4: Simplify right side
    100,466.27x = 7,645,603,961.61
  5. Step 5: Solve for x
    x = 7,645,603,961.61/100,466.27
  6. Step 6: Final answer
    x = 76,101.21

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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.