Home / 131,718.80-181,723.02-83,961.20

Finding the Fourth Proportional to 131,718.80, 181,723.02 and 83,961.20

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Solution

The fourth proportional to 131,718.80, 181,723.02 and 83,961.20 is: 115,835.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,718.80 : 181,723.02 = 83,961.20 : x
  2. Step 2: Convert to fraction form
    131,718.80/181,723.02 = 83,961.20/x
  3. Step 3: Cross multiply
    131,718.80x = 181,723.02 × 83,961.20
  4. Step 4: Simplify right side
    131,718.80x = 15,257,682,826.82
  5. Step 5: Solve for x
    x = 15,257,682,826.82/131,718.80
  6. Step 6: Final answer
    x = 115,835.27

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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.