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Finding the Fourth Proportional to 101,851.40, 152,801.40 and 51,939.20

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Solution

The fourth proportional to 101,851.40, 152,801.40 and 51,939.20 is: 77,921.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,851.40 : 152,801.40 = 51,939.20 : x
  2. Step 2: Convert to fraction form
    101,851.40/152,801.40 = 51,939.20/x
  3. Step 3: Cross multiply
    101,851.40x = 152,801.40 × 51,939.20
  4. Step 4: Simplify right side
    101,851.40x = 7,936,382,474.88
  5. Step 5: Solve for x
    x = 7,936,382,474.88/101,851.40
  6. Step 6: Final answer
    x = 77,921.19

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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.