Home / 123,305.13-170,161.29-66,716.52

Finding the Fourth Proportional to 123,305.13, 170,161.29 and 66,716.52

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Solution

The fourth proportional to 123,305.13, 170,161.29 and 66,716.52 is: 92,068.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,305.13 : 170,161.29 = 66,716.52 : x
  2. Step 2: Convert to fraction form
    123,305.13/170,161.29 = 66,716.52/x
  3. Step 3: Cross multiply
    123,305.13x = 170,161.29 × 66,716.52
  4. Step 4: Simplify right side
    123,305.13x = 11,352,569,107.51
  5. Step 5: Solve for x
    x = 11,352,569,107.51/123,305.13
  6. Step 6: Final answer
    x = 92,068.91

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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.