Home / 515,054.14-772,564.80-135,963.20

Finding the Fourth Proportional to 515,054.14, 772,564.80 and 135,963.20

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Solution

The fourth proportional to 515,054.14, 772,564.80 and 135,963.20 is: 203,940.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,054.14 : 772,564.80 = 135,963.20 : x
  2. Step 2: Convert to fraction form
    515,054.14/772,564.80 = 135,963.20/x
  3. Step 3: Cross multiply
    515,054.14x = 772,564.80 × 135,963.20
  4. Step 4: Simplify right side
    515,054.14x = 105,040,382,415.36
  5. Step 5: Solve for x
    x = 105,040,382,415.36/515,054.14
  6. Step 6: Final answer
    x = 203,940.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.