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Finding the Fourth Proportional to 102,119.82, 153,043.65 and 45,947.94

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Solution

The fourth proportional to 102,119.82, 153,043.65 and 45,947.94 is: 68,860.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,119.82 : 153,043.65 = 45,947.94 : x
  2. Step 2: Convert to fraction form
    102,119.82/153,043.65 = 45,947.94/x
  3. Step 3: Cross multiply
    102,119.82x = 153,043.65 × 45,947.94
  4. Step 4: Simplify right side
    102,119.82x = 7,032,040,447.58
  5. Step 5: Solve for x
    x = 7,032,040,447.58/102,119.82
  6. Step 6: Final answer
    x = 68,860.68

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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.