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Finding the Fourth Proportional to 129,482.80, 194,224.20 and 76,951.60

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Solution

The fourth proportional to 129,482.80, 194,224.20 and 76,951.60 is: 115,427.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,482.80 : 194,224.20 = 76,951.60 : x
  2. Step 2: Convert to fraction form
    129,482.80/194,224.20 = 76,951.60/x
  3. Step 3: Cross multiply
    129,482.80x = 194,224.20 × 76,951.60
  4. Step 4: Simplify right side
    129,482.80x = 14,945,862,948.72
  5. Step 5: Solve for x
    x = 14,945,862,948.72/129,482.80
  6. Step 6: Final answer
    x = 115,427.40

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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.