Home / 138,287.36-190,824.24-77,028.84

Finding the Fourth Proportional to 138,287.36, 190,824.24 and 77,028.84

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Solution

The fourth proportional to 138,287.36, 190,824.24 and 77,028.84 is: 106,292.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,287.36 : 190,824.24 = 77,028.84 : x
  2. Step 2: Convert to fraction form
    138,287.36/190,824.24 = 77,028.84/x
  3. Step 3: Cross multiply
    138,287.36x = 190,824.24 × 77,028.84
  4. Step 4: Simplify right side
    138,287.36x = 14,698,969,851.08
  5. Step 5: Solve for x
    x = 14,698,969,851.08/138,287.36
  6. Step 6: Final answer
    x = 106,292.94

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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.