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Finding the Fourth Proportional to 100,574, 150,880.42 and 38,239.64

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Solution

The fourth proportional to 100,574, 150,880.42 and 38,239.64 is: 57,366.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,574 : 150,880.42 = 38,239.64 : x
  2. Step 2: Convert to fraction form
    100,574/150,880.42 = 38,239.64/x
  3. Step 3: Cross multiply
    100,574x = 150,880.42 × 38,239.64
  4. Step 4: Simplify right side
    100,574x = 5,769,612,943.85
  5. Step 5: Solve for x
    x = 5,769,612,943.85/100,574
  6. Step 6: Final answer
    x = 57,366.84

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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.