Home / 123,287.25-170,137.64-66,699.84

Finding the Fourth Proportional to 123,287.25, 170,137.64 and 66,699.84

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Solution

The fourth proportional to 123,287.25, 170,137.64 and 66,699.84 is: 92,046.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,287.25 : 170,137.64 = 66,699.84 : x
  2. Step 2: Convert to fraction form
    123,287.25/170,137.64 = 66,699.84/x
  3. Step 3: Cross multiply
    123,287.25x = 170,137.64 × 66,699.84
  4. Step 4: Simplify right side
    123,287.25x = 11,348,153,032.48
  5. Step 5: Solve for x
    x = 11,348,153,032.48/123,287.25
  6. Step 6: Final answer
    x = 92,046.44

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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.