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Finding the Fourth Proportional to 123,338.70, 185,094.45 and 53,268.30

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Solution

The fourth proportional to 123,338.70, 185,094.45 and 53,268.30 is: 79,939.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,338.70 : 185,094.45 = 53,268.30 : x
  2. Step 2: Convert to fraction form
    123,338.70/185,094.45 = 53,268.30/x
  3. Step 3: Cross multiply
    123,338.70x = 185,094.45 × 53,268.30
  4. Step 4: Simplify right side
    123,338.70x = 9,859,666,690.94
  5. Step 5: Solve for x
    x = 9,859,666,690.94/123,338.70
  6. Step 6: Final answer
    x = 79,939.76

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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.