Home / 205,037.80-307,556.70-142,052.20

Finding the Fourth Proportional to 205,037.80, 307,556.70 and 142,052.20

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Solution

The fourth proportional to 205,037.80, 307,556.70 and 142,052.20 is: 213,078.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,037.80 : 307,556.70 = 142,052.20 : x
  2. Step 2: Convert to fraction form
    205,037.80/307,556.70 = 142,052.20/x
  3. Step 3: Cross multiply
    205,037.80x = 307,556.70 × 142,052.20
  4. Step 4: Simplify right side
    205,037.80x = 43,689,105,859.74
  5. Step 5: Solve for x
    x = 43,689,105,859.74/205,037.80
  6. Step 6: Final answer
    x = 213,078.30

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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.