Home / 189,823.40-261,982.50-109,249.40

Finding the Fourth Proportional to 189,823.40, 261,982.50 and 109,249.40

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Solution

The fourth proportional to 189,823.40, 261,982.50 and 109,249.40 is: 150,779.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,823.40 : 261,982.50 = 109,249.40 : x
  2. Step 2: Convert to fraction form
    189,823.40/261,982.50 = 109,249.40/x
  3. Step 3: Cross multiply
    189,823.40x = 261,982.50 × 109,249.40
  4. Step 4: Simplify right side
    189,823.40x = 28,621,430,935.50
  5. Step 5: Solve for x
    x = 28,621,430,935.50/189,823.40
  6. Step 6: Final answer
    x = 150,779.26

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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.