Home / 123,360.12-170,236.94-66,771.50

Finding the Fourth Proportional to 123,360.12, 170,236.94 and 66,771.50

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Solution

The fourth proportional to 123,360.12, 170,236.94 and 66,771.50 is: 92,144.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,360.12 : 170,236.94 = 66,771.50 : x
  2. Step 2: Convert to fraction form
    123,360.12/170,236.94 = 66,771.50/x
  3. Step 3: Cross multiply
    123,360.12x = 170,236.94 × 66,771.50
  4. Step 4: Simplify right side
    123,360.12x = 11,366,974,654.17
  5. Step 5: Solve for x
    x = 11,366,974,654.17/123,360.12
  6. Step 6: Final answer
    x = 92,144.65

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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.