Home / 131,611.88-181,623.84-71,182.58

Finding the Fourth Proportional to 131,611.88, 181,623.84 and 71,182.58

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Solution

The fourth proportional to 131,611.88, 181,623.84 and 71,182.58 is: 98,231.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,611.88 : 181,623.84 = 71,182.58 : x
  2. Step 2: Convert to fraction form
    131,611.88/181,623.84 = 71,182.58/x
  3. Step 3: Cross multiply
    131,611.88x = 181,623.84 × 71,182.58
  4. Step 4: Simplify right side
    131,611.88x = 12,928,453,520.71
  5. Step 5: Solve for x
    x = 12,928,453,520.71/131,611.88
  6. Step 6: Final answer
    x = 98,231.66

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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.