Home / 123,087.21-169,860.35-66,498.58

Finding the Fourth Proportional to 123,087.21, 169,860.35 and 66,498.58

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Solution

The fourth proportional to 123,087.21, 169,860.35 and 66,498.58 is: 91,768.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,087.21 : 169,860.35 = 66,498.58 : x
  2. Step 2: Convert to fraction form
    123,087.21/169,860.35 = 66,498.58/x
  3. Step 3: Cross multiply
    123,087.21x = 169,860.35 × 66,498.58
  4. Step 4: Simplify right side
    123,087.21x = 11,295,471,740.81
  5. Step 5: Solve for x
    x = 11,295,471,740.81/123,087.21
  6. Step 6: Final answer
    x = 91,768.04

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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.