Home / 123,419.13-170,319.22-66,830.51

Finding the Fourth Proportional to 123,419.13, 170,319.22 and 66,830.51

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Solution

The fourth proportional to 123,419.13, 170,319.22 and 66,830.51 is: 92,226.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,419.13 : 170,319.22 = 66,830.51 : x
  2. Step 2: Convert to fraction form
    123,419.13/170,319.22 = 66,830.51/x
  3. Step 3: Cross multiply
    123,419.13x = 170,319.22 × 66,830.51
  4. Step 4: Simplify right side
    123,419.13x = 11,382,519,316.73
  5. Step 5: Solve for x
    x = 11,382,519,316.73/123,419.13
  6. Step 6: Final answer
    x = 92,226.54

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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.