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Finding the Fourth Proportional to 139,624.65, 209,357.64 and 95,305.05

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Solution

The fourth proportional to 139,624.65, 209,357.64 and 95,305.05 is: 142,903.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,624.65 : 209,357.64 = 95,305.05 : x
  2. Step 2: Convert to fraction form
    139,624.65/209,357.64 = 95,305.05/x
  3. Step 3: Cross multiply
    139,624.65x = 209,357.64 × 95,305.05
  4. Step 4: Simplify right side
    139,624.65x = 19,952,840,348.08
  5. Step 5: Solve for x
    x = 19,952,840,348.08/139,624.65
  6. Step 6: Final answer
    x = 142,903.42

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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.