Home / 131,939.20-182,072.64-71,507.20

Finding the Fourth Proportional to 131,939.20, 182,072.64 and 71,507.20

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Solution

The fourth proportional to 131,939.20, 182,072.64 and 71,507.20 is: 98,678.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,939.20 : 182,072.64 = 71,507.20 : x
  2. Step 2: Convert to fraction form
    131,939.20/182,072.64 = 71,507.20/x
  3. Step 3: Cross multiply
    131,939.20x = 182,072.64 × 71,507.20
  4. Step 4: Simplify right side
    131,939.20x = 13,019,504,683.01
  5. Step 5: Solve for x
    x = 13,019,504,683.01/131,939.20
  6. Step 6: Final answer
    x = 98,678.06

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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.