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Finding the Fourth Proportional to 100,964.20, 151,446.30 and 34,479.40

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Solution

The fourth proportional to 100,964.20, 151,446.30 and 34,479.40 is: 51,719.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,964.20 : 151,446.30 = 34,479.40 : x
  2. Step 2: Convert to fraction form
    100,964.20/151,446.30 = 34,479.40/x
  3. Step 3: Cross multiply
    100,964.20x = 151,446.30 × 34,479.40
  4. Step 4: Simplify right side
    100,964.20x = 5,221,777,556.22
  5. Step 5: Solve for x
    x = 5,221,777,556.22/100,964.20
  6. Step 6: Final answer
    x = 51,719.10

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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.