Home / 100,577.30-138,799.12-55,258.22

Finding the Fourth Proportional to 100,577.30, 138,799.12 and 55,258.22

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Solution

The fourth proportional to 100,577.30, 138,799.12 and 55,258.22 is: 76,257.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,577.30 : 138,799.12 = 55,258.22 : x
  2. Step 2: Convert to fraction form
    100,577.30/138,799.12 = 55,258.22/x
  3. Step 3: Cross multiply
    100,577.30x = 138,799.12 × 55,258.22
  4. Step 4: Simplify right side
    100,577.30x = 7,669,792,308.10
  5. Step 5: Solve for x
    x = 7,669,792,308.10/100,577.30
  6. Step 6: Final answer
    x = 76,257.69

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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.