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Finding the Fourth Proportional to 123,765.67, 170,796.95 and 67,177.05

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Solution

The fourth proportional to 123,765.67, 170,796.95 and 67,177.05 is: 92,704.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,765.67 : 170,796.95 = 67,177.05 : x
  2. Step 2: Convert to fraction form
    123,765.67/170,796.95 = 67,177.05/x
  3. Step 3: Cross multiply
    123,765.67x = 170,796.95 × 67,177.05
  4. Step 4: Simplify right side
    123,765.67x = 11,473,634,903.41
  5. Step 5: Solve for x
    x = 11,473,634,903.41/123,765.67
  6. Step 6: Final answer
    x = 92,704.50

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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.