Home / 99,323.20-148,912.80-40,129.60

Finding the Fourth Proportional to 99,323.20, 148,912.80 and 40,129.60

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Solution

The fourth proportional to 99,323.20, 148,912.80 and 40,129.60 is: 60,165.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,323.20 : 148,912.80 = 40,129.60 : x
  2. Step 2: Convert to fraction form
    99,323.20/148,912.80 = 40,129.60/x
  3. Step 3: Cross multiply
    99,323.20x = 148,912.80 × 40,129.60
  4. Step 4: Simplify right side
    99,323.20x = 5,975,811,098.88
  5. Step 5: Solve for x
    x = 5,975,811,098.88/99,323.20
  6. Step 6: Final answer
    x = 60,165.31

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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.