Home / 165,619.80-248,429.70-86,758.20

Finding the Fourth Proportional to 165,619.80, 248,429.70 and 86,758.20

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Solution

The fourth proportional to 165,619.80, 248,429.70 and 86,758.20 is: 130,137.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,619.80 : 248,429.70 = 86,758.20 : x
  2. Step 2: Convert to fraction form
    165,619.80/248,429.70 = 86,758.20/x
  3. Step 3: Cross multiply
    165,619.80x = 248,429.70 × 86,758.20
  4. Step 4: Simplify right side
    165,619.80x = 21,553,313,598.54
  5. Step 5: Solve for x
    x = 21,553,313,598.54/165,619.80
  6. Step 6: Final answer
    x = 130,137.30

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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.