Home / 100,382.04-138,515.94-57,954.60

Finding the Fourth Proportional to 100,382.04, 138,515.94 and 57,954.60

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Solution

The fourth proportional to 100,382.04, 138,515.94 and 57,954.60 is: 79,970.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,382.04 : 138,515.94 = 57,954.60 : x
  2. Step 2: Convert to fraction form
    100,382.04/138,515.94 = 57,954.60/x
  3. Step 3: Cross multiply
    100,382.04x = 138,515.94 × 57,954.60
  4. Step 4: Simplify right side
    100,382.04x = 8,027,635,896.32
  5. Step 5: Solve for x
    x = 8,027,635,896.32/100,382.04
  6. Step 6: Final answer
    x = 79,970.84

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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.