Home / 131,451.06-181,392.21-80,442.63

Finding the Fourth Proportional to 131,451.06, 181,392.21 and 80,442.63

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Solution

The fourth proportional to 131,451.06, 181,392.21 and 80,442.63 is: 111,004.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,451.06 : 181,392.21 = 80,442.63 : x
  2. Step 2: Convert to fraction form
    131,451.06/181,392.21 = 80,442.63/x
  3. Step 3: Cross multiply
    131,451.06x = 181,392.21 × 80,442.63
  4. Step 4: Simplify right side
    131,451.06x = 14,591,666,433.91
  5. Step 5: Solve for x
    x = 14,591,666,433.91/131,451.06
  6. Step 6: Final answer
    x = 111,004.56

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1.5x scale

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.