Home / 123,218.51-170,041.41-66,629.75

Finding the Fourth Proportional to 123,218.51, 170,041.41 and 66,629.75

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Solution

The fourth proportional to 123,218.51, 170,041.41 and 66,629.75 is: 91,948.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,218.51 : 170,041.41 = 66,629.75 : x
  2. Step 2: Convert to fraction form
    123,218.51/170,041.41 = 66,629.75/x
  3. Step 3: Cross multiply
    123,218.51x = 170,041.41 × 66,629.75
  4. Step 4: Simplify right side
    123,218.51x = 11,329,816,637.95
  5. Step 5: Solve for x
    x = 11,329,816,637.95/123,218.51
  6. Step 6: Final answer
    x = 91,948.98

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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.