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Finding the Fourth Proportional to 129,703.20, 194,446.80 and 54,880.80

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Solution

The fourth proportional to 129,703.20, 194,446.80 and 54,880.80 is: 82,275.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,703.20 : 194,446.80 = 54,880.80 : x
  2. Step 2: Convert to fraction form
    129,703.20/194,446.80 = 54,880.80/x
  3. Step 3: Cross multiply
    129,703.20x = 194,446.80 × 54,880.80
  4. Step 4: Simplify right side
    129,703.20x = 10,671,395,941.44
  5. Step 5: Solve for x
    x = 10,671,395,941.44/129,703.20
  6. Step 6: Final answer
    x = 82,275.50

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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.