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Finding the Fourth Proportional to 129,094.40, 193,583.28 and 45,990.56

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Solution

The fourth proportional to 129,094.40, 193,583.28 and 45,990.56 is: 68,965.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,094.40 : 193,583.28 = 45,990.56 : x
  2. Step 2: Convert to fraction form
    129,094.40/193,583.28 = 45,990.56/x
  3. Step 3: Cross multiply
    129,094.40x = 193,583.28 × 45,990.56
  4. Step 4: Simplify right side
    129,094.40x = 8,903,003,453.84
  5. Step 5: Solve for x
    x = 8,903,003,453.84/129,094.40
  6. Step 6: Final answer
    x = 68,965.06

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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.