Home / 131,896.08-181,984.32-78,193.80

Finding the Fourth Proportional to 131,896.08, 181,984.32 and 78,193.80

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Solution

The fourth proportional to 131,896.08, 181,984.32 and 78,193.80 is: 107,888.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,896.08 : 181,984.32 = 78,193.80 : x
  2. Step 2: Convert to fraction form
    131,896.08/181,984.32 = 78,193.80/x
  3. Step 3: Cross multiply
    131,896.08x = 181,984.32 × 78,193.80
  4. Step 4: Simplify right side
    131,896.08x = 14,230,045,521.22
  5. Step 5: Solve for x
    x = 14,230,045,521.22/131,896.08
  6. Step 6: Final answer
    x = 107,888.31

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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.