Home / 131,982.90-182,055.73-78,231.93

Finding the Fourth Proportional to 131,982.90, 182,055.73 and 78,231.93

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Solution

The fourth proportional to 131,982.90, 182,055.73 and 78,231.93 is: 107,912.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,982.90 : 182,055.73 = 78,231.93 : x
  2. Step 2: Convert to fraction form
    131,982.90/182,055.73 = 78,231.93/x
  3. Step 3: Cross multiply
    131,982.90x = 182,055.73 × 78,231.93
  4. Step 4: Simplify right side
    131,982.90x = 14,242,571,125.46
  5. Step 5: Solve for x
    x = 14,242,571,125.46/131,982.90
  6. Step 6: Final answer
    x = 107,912.25

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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.