Home / 131,682.21-181,720.08-71,251.52

Finding the Fourth Proportional to 131,682.21, 181,720.08 and 71,251.52

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Solution

The fourth proportional to 131,682.21, 181,720.08 and 71,251.52 is: 98,326.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,682.21 : 181,720.08 = 71,251.52 : x
  2. Step 2: Convert to fraction form
    131,682.21/181,720.08 = 71,251.52/x
  3. Step 3: Cross multiply
    131,682.21x = 181,720.08 × 71,251.52
  4. Step 4: Simplify right side
    131,682.21x = 12,947,831,914.52
  5. Step 5: Solve for x
    x = 12,947,831,914.52/131,682.21
  6. Step 6: Final answer
    x = 98,326.36

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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.