Home / 123,456.09-170,369.40-66,867.48

Finding the Fourth Proportional to 123,456.09, 170,369.40 and 66,867.48

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Solution

The fourth proportional to 123,456.09, 170,369.40 and 66,867.48 is: 92,277.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,456.09 : 170,369.40 = 66,867.48 : x
  2. Step 2: Convert to fraction form
    123,456.09/170,369.40 = 66,867.48/x
  3. Step 3: Cross multiply
    123,456.09x = 170,369.40 × 66,867.48
  4. Step 4: Simplify right side
    123,456.09x = 11,392,172,447.11
  5. Step 5: Solve for x
    x = 11,392,172,447.11/123,456.09
  6. Step 6: Final answer
    x = 92,277.12

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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.