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Finding the Fourth Proportional to 80,141.70, 120,097.80 and 45,007.68

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Solution

The fourth proportional to 80,141.70, 120,097.80 and 45,007.68 is: 67,447.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,141.70 : 120,097.80 = 45,007.68 : x
  2. Step 2: Convert to fraction form
    80,141.70/120,097.80 = 45,007.68/x
  3. Step 3: Cross multiply
    80,141.70x = 120,097.80 × 45,007.68
  4. Step 4: Simplify right side
    80,141.70x = 5,405,323,351.10
  5. Step 5: Solve for x
    x = 5,405,323,351.10/80,141.70
  6. Step 6: Final answer
    x = 67,447.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.