Home / 100,982.58-139,356.93-55,662.33

Finding the Fourth Proportional to 100,982.58, 139,356.93 and 55,662.33

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Solution

The fourth proportional to 100,982.58, 139,356.93 and 55,662.33 is: 76,814.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,982.58 : 139,356.93 = 55,662.33 : x
  2. Step 2: Convert to fraction form
    100,982.58/139,356.93 = 55,662.33/x
  3. Step 3: Cross multiply
    100,982.58x = 139,356.93 × 55,662.33
  4. Step 4: Simplify right side
    100,982.58x = 7,756,931,425.45
  5. Step 5: Solve for x
    x = 7,756,931,425.45/100,982.58
  6. Step 6: Final answer
    x = 76,814.55

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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.