Home / 122,805.99-169,556.09-90,544.50

Finding the Fourth Proportional to 122,805.99, 169,556.09 and 90,544.50

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Solution

The fourth proportional to 122,805.99, 169,556.09 and 90,544.50 is: 125,013.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,805.99 : 169,556.09 = 90,544.50 : x
  2. Step 2: Convert to fraction form
    122,805.99/169,556.09 = 90,544.50/x
  3. Step 3: Cross multiply
    122,805.99x = 169,556.09 × 90,544.50
  4. Step 4: Simplify right side
    122,805.99x = 15,352,370,938.28
  5. Step 5: Solve for x
    x = 15,352,370,938.28/122,805.99
  6. Step 6: Final answer
    x = 125,013.21

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1.5x scale

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.