Home / 123,467.22-170,385-66,878.64

Finding the Fourth Proportional to 123,467.22, 170,385 and 66,878.64

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Solution

The fourth proportional to 123,467.22, 170,385 and 66,878.64 is: 92,292.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,467.22 : 170,385 = 66,878.64 : x
  2. Step 2: Convert to fraction form
    123,467.22/170,385 = 66,878.64/x
  3. Step 3: Cross multiply
    123,467.22x = 170,385 × 66,878.64
  4. Step 4: Simplify right side
    123,467.22x = 11,395,117,076.40
  5. Step 5: Solve for x
    x = 11,395,117,076.40/123,467.22
  6. Step 6: Final answer
    x = 92,292.65

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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.