Home / 100,362.06-138,498.81-57,919.68

Finding the Fourth Proportional to 100,362.06, 138,498.81 and 57,919.68

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Solution

The fourth proportional to 100,362.06, 138,498.81 and 57,919.68 is: 79,928.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,362.06 : 138,498.81 = 57,919.68 : x
  2. Step 2: Convert to fraction form
    100,362.06/138,498.81 = 57,919.68/x
  3. Step 3: Cross multiply
    100,362.06x = 138,498.81 × 57,919.68
  4. Step 4: Simplify right side
    100,362.06x = 8,021,806,755.58
  5. Step 5: Solve for x
    x = 8,021,806,755.58/100,362.06
  6. Step 6: Final answer
    x = 79,928.68

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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.