Home / 131,791.10-181,872-71,362.46

Finding the Fourth Proportional to 131,791.10, 181,872 and 71,362.46

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Solution

The fourth proportional to 131,791.10, 181,872 and 71,362.46 is: 98,480.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,791.10 : 181,872 = 71,362.46 : x
  2. Step 2: Convert to fraction form
    131,791.10/181,872 = 71,362.46/x
  3. Step 3: Cross multiply
    131,791.10x = 181,872 × 71,362.46
  4. Step 4: Simplify right side
    131,791.10x = 12,978,833,325.12
  5. Step 5: Solve for x
    x = 12,978,833,325.12/131,791.10
  6. Step 6: Final answer
    x = 98,480.35

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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.