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Finding the Fourth Proportional to 103,393.12, 154,765.56 and 71,184.28

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Solution

The fourth proportional to 103,393.12, 154,765.56 and 71,184.28 is: 106,553.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,393.12 : 154,765.56 = 71,184.28 : x
  2. Step 2: Convert to fraction form
    103,393.12/154,765.56 = 71,184.28/x
  3. Step 3: Cross multiply
    103,393.12x = 154,765.56 × 71,184.28
  4. Step 4: Simplify right side
    103,393.12x = 11,016,874,957.40
  5. Step 5: Solve for x
    x = 11,016,874,957.40/103,393.12
  6. Step 6: Final answer
    x = 106,553.27

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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.