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Finding the Fourth Proportional to 147,391.56, 203,433.12 and 93,666

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Solution

The fourth proportional to 147,391.56, 203,433.12 and 93,666 is: 129,279.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,391.56 : 203,433.12 = 93,666 : x
  2. Step 2: Convert to fraction form
    147,391.56/203,433.12 = 93,666/x
  3. Step 3: Cross multiply
    147,391.56x = 203,433.12 × 93,666
  4. Step 4: Simplify right side
    147,391.56x = 19,054,766,617.92
  5. Step 5: Solve for x
    x = 19,054,766,617.92/147,391.56
  6. Step 6: Final answer
    x = 129,279.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.