Home / 189,642.13-261,714.07-109,069.71

Finding the Fourth Proportional to 189,642.13, 261,714.07 and 109,069.71

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Solution

The fourth proportional to 189,642.13, 261,714.07 and 109,069.71 is: 150,520.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,642.13 : 261,714.07 = 109,069.71 : x
  2. Step 2: Convert to fraction form
    189,642.13/261,714.07 = 109,069.71/x
  3. Step 3: Cross multiply
    189,642.13x = 261,714.07 × 109,069.71
  4. Step 4: Simplify right side
    189,642.13x = 28,545,076,872.73
  5. Step 5: Solve for x
    x = 28,545,076,872.73/189,642.13
  6. Step 6: Final answer
    x = 150,520.76

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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.