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Finding the Fourth Proportional to 123,567.69, 170,523.48 and 66,979.06

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Solution

The fourth proportional to 123,567.69, 170,523.48 and 66,979.06 is: 92,431.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,567.69 : 170,523.48 = 66,979.06 : x
  2. Step 2: Convert to fraction form
    123,567.69/170,523.48 = 66,979.06/x
  3. Step 3: Cross multiply
    123,567.69x = 170,523.48 × 66,979.06
  4. Step 4: Simplify right side
    123,567.69x = 11,421,502,398.33
  5. Step 5: Solve for x
    x = 11,421,502,398.33/123,567.69
  6. Step 6: Final answer
    x = 92,431.14

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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.