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Finding the Fourth Proportional to 220,129.44, 330,007.65 and 87,103.56

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Solution

The fourth proportional to 220,129.44, 330,007.65 and 87,103.56 is: 130,581.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,129.44 : 330,007.65 = 87,103.56 : x
  2. Step 2: Convert to fraction form
    220,129.44/330,007.65 = 87,103.56/x
  3. Step 3: Cross multiply
    220,129.44x = 330,007.65 × 87,103.56
  4. Step 4: Simplify right side
    220,129.44x = 28,744,841,142.23
  5. Step 5: Solve for x
    x = 28,744,841,142.23/220,129.44
  6. Step 6: Final answer
    x = 130,581.54

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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.