Home / 139,861.08-193,008.31-76,198.88

Finding the Fourth Proportional to 139,861.08, 193,008.31 and 76,198.88

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Solution

The fourth proportional to 139,861.08, 193,008.31 and 76,198.88 is: 105,154.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,861.08 : 193,008.31 = 76,198.88 : x
  2. Step 2: Convert to fraction form
    139,861.08/193,008.31 = 76,198.88/x
  3. Step 3: Cross multiply
    139,861.08x = 193,008.31 × 76,198.88
  4. Step 4: Simplify right side
    139,861.08x = 14,707,017,049.55
  5. Step 5: Solve for x
    x = 14,707,017,049.55/139,861.08
  6. Step 6: Final answer
    x = 105,154.46

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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.