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Finding the Fourth Proportional to 129,902.40, 194,853.60 and 112,187.70

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Solution

The fourth proportional to 129,902.40, 194,853.60 and 112,187.70 is: 168,281.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,902.40 : 194,853.60 = 112,187.70 : x
  2. Step 2: Convert to fraction form
    129,902.40/194,853.60 = 112,187.70/x
  3. Step 3: Cross multiply
    129,902.40x = 194,853.60 × 112,187.70
  4. Step 4: Simplify right side
    129,902.40x = 21,860,177,220.72
  5. Step 5: Solve for x
    x = 21,860,177,220.72/129,902.40
  6. Step 6: Final answer
    x = 168,281.55

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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.