Home / 131,272.32-181,143.36-80,961.60

Finding the Fourth Proportional to 131,272.32, 181,143.36 and 80,961.60

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Solution

The fourth proportional to 131,272.32, 181,143.36 and 80,961.60 is: 111,719.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,272.32 : 181,143.36 = 80,961.60 : x
  2. Step 2: Convert to fraction form
    131,272.32/181,143.36 = 80,961.60/x
  3. Step 3: Cross multiply
    131,272.32x = 181,143.36 × 80,961.60
  4. Step 4: Simplify right side
    131,272.32x = 14,665,656,254.98
  5. Step 5: Solve for x
    x = 14,665,656,254.98/131,272.32
  6. Step 6: Final answer
    x = 111,719.33

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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.