Home / 189,563.72-261,597.47-108,987.35

Finding the Fourth Proportional to 189,563.72, 261,597.47 and 108,987.35

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Solution

The fourth proportional to 189,563.72, 261,597.47 and 108,987.35 is: 150,402.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,563.72 : 261,597.47 = 108,987.35 : x
  2. Step 2: Convert to fraction form
    189,563.72/261,597.47 = 108,987.35/x
  3. Step 3: Cross multiply
    189,563.72x = 261,597.47 × 108,987.35
  4. Step 4: Simplify right side
    189,563.72x = 28,510,813,169.08
  5. Step 5: Solve for x
    x = 28,510,813,169.08/189,563.72
  6. Step 6: Final answer
    x = 150,402.27

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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.