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Finding the Fourth Proportional to 239,425, 359,189.34 and 91,681

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Solution

The fourth proportional to 239,425, 359,189.34 and 91,681 is: 137,541.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,425 : 359,189.34 = 91,681 : x
  2. Step 2: Convert to fraction form
    239,425/359,189.34 = 91,681/x
  3. Step 3: Cross multiply
    239,425x = 359,189.34 × 91,681
  4. Step 4: Simplify right side
    239,425x = 32,930,837,880.54
  5. Step 5: Solve for x
    x = 32,930,837,880.54/239,425
  6. Step 6: Final answer
    x = 137,541.35

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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.