Home / 123,360.12-170,236.80-66,771.45

Finding the Fourth Proportional to 123,360.12, 170,236.80 and 66,771.45

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Solution

The fourth proportional to 123,360.12, 170,236.80 and 66,771.45 is: 92,144.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,360.12 : 170,236.80 = 66,771.45 : x
  2. Step 2: Convert to fraction form
    123,360.12/170,236.80 = 66,771.45/x
  3. Step 3: Cross multiply
    123,360.12x = 170,236.80 × 66,771.45
  4. Step 4: Simplify right side
    123,360.12x = 11,366,957,979.36
  5. Step 5: Solve for x
    x = 11,366,957,979.36/123,360.12
  6. Step 6: Final answer
    x = 92,144.51

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1.5x scale

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.