Home / 139,742.30-192,845.25-76,080.75

Finding the Fourth Proportional to 139,742.30, 192,845.25 and 76,080.75

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Solution

The fourth proportional to 139,742.30, 192,845.25 and 76,080.75 is: 104,991.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,742.30 : 192,845.25 = 76,080.75 : x
  2. Step 2: Convert to fraction form
    139,742.30/192,845.25 = 76,080.75/x
  3. Step 3: Cross multiply
    139,742.30x = 192,845.25 × 76,080.75
  4. Step 4: Simplify right side
    139,742.30x = 14,671,811,253.94
  5. Step 5: Solve for x
    x = 14,671,811,253.94/139,742.30
  6. Step 6: Final answer
    x = 104,991.92

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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.