Home / 99,855.27-137,801.21-56,832.65

Finding the Fourth Proportional to 99,855.27, 137,801.21 and 56,832.65

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Solution

The fourth proportional to 99,855.27, 137,801.21 and 56,832.65 is: 78,429.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,855.27 : 137,801.21 = 56,832.65 : x
  2. Step 2: Convert to fraction form
    99,855.27/137,801.21 = 56,832.65/x
  3. Step 3: Cross multiply
    99,855.27x = 137,801.21 × 56,832.65
  4. Step 4: Simplify right side
    99,855.27x = 7,831,607,481.09
  5. Step 5: Solve for x
    x = 7,831,607,481.09/99,855.27
  6. Step 6: Final answer
    x = 78,429.59

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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.