Home / 123,207.40-170,026.38-66,618.88

Finding the Fourth Proportional to 123,207.40, 170,026.38 and 66,618.88

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Solution

The fourth proportional to 123,207.40, 170,026.38 and 66,618.88 is: 91,934.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,207.40 : 170,026.38 = 66,618.88 : x
  2. Step 2: Convert to fraction form
    123,207.40/170,026.38 = 66,618.88/x
  3. Step 3: Cross multiply
    123,207.40x = 170,026.38 × 66,618.88
  4. Step 4: Simplify right side
    123,207.40x = 11,326,967,006.05
  5. Step 5: Solve for x
    x = 11,326,967,006.05/123,207.40
  6. Step 6: Final answer
    x = 91,934.15

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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.