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Finding the Fourth Proportional to 123,488.69, 170,414.66 and 66,900.06

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Solution

The fourth proportional to 123,488.69, 170,414.66 and 66,900.06 is: 92,322.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,488.69 : 170,414.66 = 66,900.06 : x
  2. Step 2: Convert to fraction form
    123,488.69/170,414.66 = 66,900.06/x
  3. Step 3: Cross multiply
    123,488.69x = 170,414.66 × 66,900.06
  4. Step 4: Simplify right side
    123,488.69x = 11,400,751,146.13
  5. Step 5: Solve for x
    x = 11,400,751,146.13/123,488.69
  6. Step 6: Final answer
    x = 92,322.23

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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.