Home / 99,816.44-137,740.80-54,485.42

Finding the Fourth Proportional to 99,816.44, 137,740.80 and 54,485.42

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Solution

The fourth proportional to 99,816.44, 137,740.80 and 54,485.42 is: 75,186.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,816.44 : 137,740.80 = 54,485.42 : x
  2. Step 2: Convert to fraction form
    99,816.44/137,740.80 = 54,485.42/x
  3. Step 3: Cross multiply
    99,816.44x = 137,740.80 × 54,485.42
  4. Step 4: Simplify right side
    99,816.44x = 7,504,865,339.14
  5. Step 5: Solve for x
    x = 7,504,865,339.14/99,816.44
  6. Step 6: Final answer
    x = 75,186.67

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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.