Home / 189,216.65-261,156.80-108,699.41

Finding the Fourth Proportional to 189,216.65, 261,156.80 and 108,699.41

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Solution

The fourth proportional to 189,216.65, 261,156.80 and 108,699.41 is: 150,026.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,216.65 : 261,156.80 = 108,699.41 : x
  2. Step 2: Convert to fraction form
    189,216.65/261,156.80 = 108,699.41/x
  3. Step 3: Cross multiply
    189,216.65x = 261,156.80 × 108,699.41
  4. Step 4: Simplify right side
    189,216.65x = 28,387,589,043.45
  5. Step 5: Solve for x
    x = 28,387,589,043.45/189,216.65
  6. Step 6: Final answer
    x = 150,026.91

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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.