Home / 131,712.98-181,764.21-75,122.90

Finding the Fourth Proportional to 131,712.98, 181,764.21 and 75,122.90

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Solution

The fourth proportional to 131,712.98, 181,764.21 and 75,122.90 is: 103,669.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,712.98 : 181,764.21 = 75,122.90 : x
  2. Step 2: Convert to fraction form
    131,712.98/181,764.21 = 75,122.90/x
  3. Step 3: Cross multiply
    131,712.98x = 181,764.21 × 75,122.90
  4. Step 4: Simplify right side
    131,712.98x = 13,654,654,571.41
  5. Step 5: Solve for x
    x = 13,654,654,571.41/131,712.98
  6. Step 6: Final answer
    x = 103,669.77

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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.