Home / 99,832.86-137,767.10-54,509.09

Finding the Fourth Proportional to 99,832.86, 137,767.10 and 54,509.09

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Solution

The fourth proportional to 99,832.86, 137,767.10 and 54,509.09 is: 75,221.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,832.86 : 137,767.10 = 54,509.09 : x
  2. Step 2: Convert to fraction form
    99,832.86/137,767.10 = 54,509.09/x
  3. Step 3: Cross multiply
    99,832.86x = 137,767.10 × 54,509.09
  4. Step 4: Simplify right side
    99,832.86x = 7,509,558,291.56
  5. Step 5: Solve for x
    x = 7,509,558,291.56/99,832.86
  6. Step 6: Final answer
    x = 75,221.31

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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.