Home / 100,851.39-139,173.79-55,528.45

Finding the Fourth Proportional to 100,851.39, 139,173.79 and 55,528.45

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Solution

The fourth proportional to 100,851.39, 139,173.79 and 55,528.45 is: 76,628.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,851.39 : 139,173.79 = 55,528.45 : x
  2. Step 2: Convert to fraction form
    100,851.39/139,173.79 = 55,528.45/x
  3. Step 3: Cross multiply
    100,851.39x = 139,173.79 × 55,528.45
  4. Step 4: Simplify right side
    100,851.39x = 7,728,104,839.33
  5. Step 5: Solve for x
    x = 7,728,104,839.33/100,851.39
  6. Step 6: Final answer
    x = 76,628.64

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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.