Home / 154,861.12-213,682.44-91,211.59

Finding the Fourth Proportional to 154,861.12, 213,682.44 and 91,211.59

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Solution

The fourth proportional to 154,861.12, 213,682.44 and 91,211.59 is: 125,856.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,861.12 : 213,682.44 = 91,211.59 : x
  2. Step 2: Convert to fraction form
    154,861.12/213,682.44 = 91,211.59/x
  3. Step 3: Cross multiply
    154,861.12x = 213,682.44 × 91,211.59
  4. Step 4: Simplify right side
    154,861.12x = 19,490,315,107.48
  5. Step 5: Solve for x
    x = 19,490,315,107.48/154,861.12
  6. Step 6: Final answer
    x = 125,856.74

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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.