Home / 123,218.21-170,041.14-66,629.59

Finding the Fourth Proportional to 123,218.21, 170,041.14 and 66,629.59

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Solution

The fourth proportional to 123,218.21, 170,041.14 and 66,629.59 is: 91,948.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,218.21 : 170,041.14 = 66,629.59 : x
  2. Step 2: Convert to fraction form
    123,218.21/170,041.14 = 66,629.59/x
  3. Step 3: Cross multiply
    123,218.21x = 170,041.14 × 66,629.59
  4. Step 4: Simplify right side
    123,218.21x = 11,329,771,016.23
  5. Step 5: Solve for x
    x = 11,329,771,016.23/123,218.21
  6. Step 6: Final answer
    x = 91,948.83

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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.