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Finding the Fourth Proportional to 123,348, 170,220.24 and 66,759.84

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Solution

The fourth proportional to 123,348, 170,220.24 and 66,759.84 is: 92,128.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,348 : 170,220.24 = 66,759.84 : x
  2. Step 2: Convert to fraction form
    123,348/170,220.24 = 66,759.84/x
  3. Step 3: Cross multiply
    123,348x = 170,220.24 × 66,759.84
  4. Step 4: Simplify right side
    123,348x = 11,363,875,987.16
  5. Step 5: Solve for x
    x = 11,363,875,987.16/123,348
  6. Step 6: Final answer
    x = 92,128.58

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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.