Home / 123,777.43-170,811.75-67,188.76

Finding the Fourth Proportional to 123,777.43, 170,811.75 and 67,188.76

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Solution

The fourth proportional to 123,777.43, 170,811.75 and 67,188.76 is: 92,719.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,777.43 : 170,811.75 = 67,188.76 : x
  2. Step 2: Convert to fraction form
    123,777.43/170,811.75 = 67,188.76/x
  3. Step 3: Cross multiply
    123,777.43x = 170,811.75 × 67,188.76
  4. Step 4: Simplify right side
    123,777.43x = 11,476,629,675.93
  5. Step 5: Solve for x
    x = 11,476,629,675.93/123,777.43
  6. Step 6: Final answer
    x = 92,719.89

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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.