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Finding the Fourth Proportional to 139,603.64, 209,326 and 95,284.08

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Solution

The fourth proportional to 139,603.64, 209,326 and 95,284.08 is: 142,871.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,603.64 : 209,326 = 95,284.08 : x
  2. Step 2: Convert to fraction form
    139,603.64/209,326 = 95,284.08/x
  3. Step 3: Cross multiply
    139,603.64x = 209,326 × 95,284.08
  4. Step 4: Simplify right side
    139,603.64x = 19,945,435,330.08
  5. Step 5: Solve for x
    x = 19,945,435,330.08/139,603.64
  6. Step 6: Final answer
    x = 142,871.89

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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.