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Finding the Fourth Proportional to 130,796.91, 196,213.80 and 42,020.64

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Solution

The fourth proportional to 130,796.91, 196,213.80 and 42,020.64 is: 63,036.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,796.91 : 196,213.80 = 42,020.64 : x
  2. Step 2: Convert to fraction form
    130,796.91/196,213.80 = 42,020.64/x
  3. Step 3: Cross multiply
    130,796.91x = 196,213.80 × 42,020.64
  4. Step 4: Simplify right side
    130,796.91x = 8,245,029,452.83
  5. Step 5: Solve for x
    x = 8,245,029,452.83/130,796.91
  6. Step 6: Final answer
    x = 63,036.88

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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.