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Finding the Fourth Proportional to 129,944.80, 194,917.20 and 70,895.80

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Solution

The fourth proportional to 129,944.80, 194,917.20 and 70,895.80 is: 106,343.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,944.80 : 194,917.20 = 70,895.80 : x
  2. Step 2: Convert to fraction form
    129,944.80/194,917.20 = 70,895.80/x
  3. Step 3: Cross multiply
    129,944.80x = 194,917.20 × 70,895.80
  4. Step 4: Simplify right side
    129,944.80x = 13,818,810,827.76
  5. Step 5: Solve for x
    x = 13,818,810,827.76/129,944.80
  6. Step 6: Final answer
    x = 106,343.70

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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.