Home / 131,381.31-181,309.83-80,393.13

Finding the Fourth Proportional to 131,381.31, 181,309.83 and 80,393.13

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Solution

The fourth proportional to 131,381.31, 181,309.83 and 80,393.13 is: 110,944.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,381.31 : 181,309.83 = 80,393.13 : x
  2. Step 2: Convert to fraction form
    131,381.31/181,309.83 = 80,393.13/x
  3. Step 3: Cross multiply
    131,381.31x = 181,309.83 × 80,393.13
  4. Step 4: Simplify right side
    131,381.31x = 14,576,064,733.47
  5. Step 5: Solve for x
    x = 14,576,064,733.47/131,381.31
  6. Step 6: Final answer
    x = 110,944.74

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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.