Home / 123,334.11-170,059.19-91,115.35

Finding the Fourth Proportional to 123,334.11, 170,059.19 and 91,115.35

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Solution

The fourth proportional to 123,334.11, 170,059.19 and 91,115.35 is: 125,634.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,334.11 : 170,059.19 = 91,115.35 : x
  2. Step 2: Convert to fraction form
    123,334.11/170,059.19 = 91,115.35/x
  3. Step 3: Cross multiply
    123,334.11x = 170,059.19 × 91,115.35
  4. Step 4: Simplify right side
    123,334.11x = 15,495,002,420.21
  5. Step 5: Solve for x
    x = 15,495,002,420.21/123,334.11
  6. Step 6: Final answer
    x = 125,634.36

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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.