Home / 98,015.80-135,292.26-77,908.36

Finding the Fourth Proportional to 98,015.80, 135,292.26 and 77,908.36

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Solution

The fourth proportional to 98,015.80, 135,292.26 and 77,908.36 is: 107,537.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,015.80 : 135,292.26 = 77,908.36 : x
  2. Step 2: Convert to fraction form
    98,015.80/135,292.26 = 77,908.36/x
  3. Step 3: Cross multiply
    98,015.80x = 135,292.26 × 77,908.36
  4. Step 4: Simplify right side
    98,015.80x = 10,540,398,097.29
  5. Step 5: Solve for x
    x = 10,540,398,097.29/98,015.80
  6. Step 6: Final answer
    x = 107,537.74

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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.