Home / 131,876.45-181,989.25-71,448.60

Finding the Fourth Proportional to 131,876.45, 181,989.25 and 71,448.60

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Solution

The fourth proportional to 131,876.45, 181,989.25 and 71,448.60 is: 98,598.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,876.45 : 181,989.25 = 71,448.60 : x
  2. Step 2: Convert to fraction form
    131,876.45/181,989.25 = 71,448.60/x
  3. Step 3: Cross multiply
    131,876.45x = 181,989.25 × 71,448.60
  4. Step 4: Simplify right side
    131,876.45x = 13,002,876,770.31
  5. Step 5: Solve for x
    x = 13,002,876,770.31/131,876.45
  6. Step 6: Final answer
    x = 98,598.93

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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.