Home / 123,304.09-170,159.39-66,715.45

Finding the Fourth Proportional to 123,304.09, 170,159.39 and 66,715.45

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Solution

The fourth proportional to 123,304.09, 170,159.39 and 66,715.45 is: 92,067.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,304.09 : 170,159.39 = 66,715.45 : x
  2. Step 2: Convert to fraction form
    123,304.09/170,159.39 = 66,715.45/x
  3. Step 3: Cross multiply
    123,304.09x = 170,159.39 × 66,715.45
  4. Step 4: Simplify right side
    123,304.09x = 11,352,259,942.00
  5. Step 5: Solve for x
    x = 11,352,259,942.00/123,304.09
  6. Step 6: Final answer
    x = 92,067.18

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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.