Home / 100,258.29-138,351.15-57,236.08

Finding the Fourth Proportional to 100,258.29, 138,351.15 and 57,236.08

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Solution

The fourth proportional to 100,258.29, 138,351.15 and 57,236.08 is: 78,982.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,258.29 : 138,351.15 = 57,236.08 : x
  2. Step 2: Convert to fraction form
    100,258.29/138,351.15 = 57,236.08/x
  3. Step 3: Cross multiply
    100,258.29x = 138,351.15 × 57,236.08
  4. Step 4: Simplify right side
    100,258.29x = 7,918,677,489.49
  5. Step 5: Solve for x
    x = 7,918,677,489.49/100,258.29
  6. Step 6: Final answer
    x = 78,982.77

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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.