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Finding the Fourth Proportional to 158,930.40, 238,274.10 and 80,101.20

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Solution

The fourth proportional to 158,930.40, 238,274.10 and 80,101.20 is: 120,090.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,930.40 : 238,274.10 = 80,101.20 : x
  2. Step 2: Convert to fraction form
    158,930.40/238,274.10 = 80,101.20/x
  3. Step 3: Cross multiply
    158,930.40x = 238,274.10 × 80,101.20
  4. Step 4: Simplify right side
    158,930.40x = 19,086,041,338.92
  5. Step 5: Solve for x
    x = 19,086,041,338.92/158,930.40
  6. Step 6: Final answer
    x = 120,090.56

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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.