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Finding the Fourth Proportional to 130,861.60, 196,320.30 and 74,728.60

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Solution

The fourth proportional to 130,861.60, 196,320.30 and 74,728.60 is: 112,108.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,861.60 : 196,320.30 = 74,728.60 : x
  2. Step 2: Convert to fraction form
    130,861.60/196,320.30 = 74,728.60/x
  3. Step 3: Cross multiply
    130,861.60x = 196,320.30 × 74,728.60
  4. Step 4: Simplify right side
    130,861.60x = 14,670,741,170.58
  5. Step 5: Solve for x
    x = 14,670,741,170.58/130,861.60
  6. Step 6: Final answer
    x = 112,108.83

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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.