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Finding the Fourth Proportional to 101,999.98, 140,757.18 and 56,676.80

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Solution

The fourth proportional to 101,999.98, 140,757.18 and 56,676.80 is: 78,212.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,999.98 : 140,757.18 = 56,676.80 : x
  2. Step 2: Convert to fraction form
    101,999.98/140,757.18 = 56,676.80/x
  3. Step 3: Cross multiply
    101,999.98x = 140,757.18 × 56,676.80
  4. Step 4: Simplify right side
    101,999.98x = 7,977,666,678.78
  5. Step 5: Solve for x
    x = 7,977,666,678.78/101,999.98
  6. Step 6: Final answer
    x = 78,212.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.