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Finding the Fourth Proportional to 113,903.80, 170,855.70 and 54,725.20

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Solution

The fourth proportional to 113,903.80, 170,855.70 and 54,725.20 is: 82,087.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,903.80 : 170,855.70 = 54,725.20 : x
  2. Step 2: Convert to fraction form
    113,903.80/170,855.70 = 54,725.20/x
  3. Step 3: Cross multiply
    113,903.80x = 170,855.70 × 54,725.20
  4. Step 4: Simplify right side
    113,903.80x = 9,350,112,353.64
  5. Step 5: Solve for x
    x = 9,350,112,353.64/113,903.80
  6. Step 6: Final answer
    x = 82,087.80

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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.