Home / 104,578.29-144,435.56-80,990.28

Finding the Fourth Proportional to 104,578.29, 144,435.56 and 80,990.28

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Solution

The fourth proportional to 104,578.29, 144,435.56 and 80,990.28 is: 111,857.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,578.29 : 144,435.56 = 80,990.28 : x
  2. Step 2: Convert to fraction form
    104,578.29/144,435.56 = 80,990.28/x
  3. Step 3: Cross multiply
    104,578.29x = 144,435.56 × 80,990.28
  4. Step 4: Simplify right side
    104,578.29x = 11,697,876,041.41
  5. Step 5: Solve for x
    x = 11,697,876,041.41/104,578.29
  6. Step 6: Final answer
    x = 111,857.60

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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.