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Finding the Fourth Proportional to 100,558.71, 150,863.00 and 30,438.23

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Solution

The fourth proportional to 100,558.71, 150,863.00 and 30,438.23 is: 45,664.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,558.71 : 150,863.00 = 30,438.23 : x
  2. Step 2: Convert to fraction form
    100,558.71/150,863.00 = 30,438.23/x
  3. Step 3: Cross multiply
    100,558.71x = 150,863.00 × 30,438.23
  4. Step 4: Simplify right side
    100,558.71x = 4,592,001,785.98
  5. Step 5: Solve for x
    x = 4,592,001,785.98/100,558.71
  6. Step 6: Final answer
    x = 45,664.88

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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.