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Finding the Fourth Proportional to 107,914.20, 161,871.30 and 104,285.40

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Solution

The fourth proportional to 107,914.20, 161,871.30 and 104,285.40 is: 156,428.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,914.20 : 161,871.30 = 104,285.40 : x
  2. Step 2: Convert to fraction form
    107,914.20/161,871.30 = 104,285.40/x
  3. Step 3: Cross multiply
    107,914.20x = 161,871.30 × 104,285.40
  4. Step 4: Simplify right side
    107,914.20x = 16,880,813,269.02
  5. Step 5: Solve for x
    x = 16,880,813,269.02/107,914.20
  6. Step 6: Final answer
    x = 156,428.10

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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.