Home / 131,877.58-181,979.10-78,153.94

Finding the Fourth Proportional to 131,877.58, 181,979.10 and 78,153.94

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Solution

The fourth proportional to 131,877.58, 181,979.10 and 78,153.94 is: 107,845.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,877.58 : 181,979.10 = 78,153.94 : x
  2. Step 2: Convert to fraction form
    131,877.58/181,979.10 = 78,153.94/x
  3. Step 3: Cross multiply
    131,877.58x = 181,979.10 × 78,153.94
  4. Step 4: Simplify right side
    131,877.58x = 14,222,383,662.65
  5. Step 5: Solve for x
    x = 14,222,383,662.65/131,877.58
  6. Step 6: Final answer
    x = 107,845.35

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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.