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Finding the Fourth Proportional to 105,803.25, 158,611.45 and 80,954.22

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Solution

The fourth proportional to 105,803.25, 158,611.45 and 80,954.22 is: 121,359.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,803.25 : 158,611.45 = 80,954.22 : x
  2. Step 2: Convert to fraction form
    105,803.25/158,611.45 = 80,954.22/x
  3. Step 3: Cross multiply
    105,803.25x = 158,611.45 × 80,954.22
  4. Step 4: Simplify right side
    105,803.25x = 12,840,266,217.82
  5. Step 5: Solve for x
    x = 12,840,266,217.82/105,803.25
  6. Step 6: Final answer
    x = 121,359.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.