Home / 123,949.98-170,988-80,954.66

Finding the Fourth Proportional to 123,949.98, 170,988 and 80,954.66

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Solution

The fourth proportional to 123,949.98, 170,988 and 80,954.66 is: 111,676.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,949.98 : 170,988 = 80,954.66 : x
  2. Step 2: Convert to fraction form
    123,949.98/170,988 = 80,954.66/x
  3. Step 3: Cross multiply
    123,949.98x = 170,988 × 80,954.66
  4. Step 4: Simplify right side
    123,949.98x = 13,842,275,404.08
  5. Step 5: Solve for x
    x = 13,842,275,404.08/123,949.98
  6. Step 6: Final answer
    x = 111,676.30

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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.