Home / 123,385.12-170,271.78-66,796.60

Finding the Fourth Proportional to 123,385.12, 170,271.78 and 66,796.60

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Solution

The fourth proportional to 123,385.12, 170,271.78 and 66,796.60 is: 92,179.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,385.12 : 170,271.78 = 66,796.60 : x
  2. Step 2: Convert to fraction form
    123,385.12/170,271.78 = 66,796.60/x
  3. Step 3: Cross multiply
    123,385.12x = 170,271.78 × 66,796.60
  4. Step 4: Simplify right side
    123,385.12x = 11,373,575,979.95
  5. Step 5: Solve for x
    x = 11,373,575,979.95/123,385.12
  6. Step 6: Final answer
    x = 92,179.48

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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.