Home / 99,127.20-148,676.40-28,999.20

Finding the Fourth Proportional to 99,127.20, 148,676.40 and 28,999.20

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Solution

The fourth proportional to 99,127.20, 148,676.40 and 28,999.20 is: 43,494.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,127.20 : 148,676.40 = 28,999.20 : x
  2. Step 2: Convert to fraction form
    99,127.20/148,676.40 = 28,999.20/x
  3. Step 3: Cross multiply
    99,127.20x = 148,676.40 × 28,999.20
  4. Step 4: Simplify right side
    99,127.20x = 4,311,496,658.88
  5. Step 5: Solve for x
    x = 4,311,496,658.88/99,127.20
  6. Step 6: Final answer
    x = 43,494.59

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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.