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Finding the Fourth Proportional to 129,941.80, 194,912.70 and 70,892.80

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Solution

The fourth proportional to 129,941.80, 194,912.70 and 70,892.80 is: 106,339.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,941.80 : 194,912.70 = 70,892.80 : x
  2. Step 2: Convert to fraction form
    129,941.80/194,912.70 = 70,892.80/x
  3. Step 3: Cross multiply
    129,941.80x = 194,912.70 × 70,892.80
  4. Step 4: Simplify right side
    129,941.80x = 13,817,907,058.56
  5. Step 5: Solve for x
    x = 13,817,907,058.56/129,941.80
  6. Step 6: Final answer
    x = 106,339.20

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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.