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Finding the Fourth Proportional to 107,932.40, 161,639.40 and 103,266.80

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Solution

The fourth proportional to 107,932.40, 161,639.40 and 103,266.80 is: 154,652.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,932.40 : 161,639.40 = 103,266.80 : x
  2. Step 2: Convert to fraction form
    107,932.40/161,639.40 = 103,266.80/x
  3. Step 3: Cross multiply
    107,932.40x = 161,639.40 × 103,266.80
  4. Step 4: Simplify right side
    107,932.40x = 16,691,983,591.92
  5. Step 5: Solve for x
    x = 16,691,983,591.92/107,932.40
  6. Step 6: Final answer
    x = 154,652.20

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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.