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Finding the Fourth Proportional to 108,609.80, 162,914.70 and 75,432.20

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Solution

The fourth proportional to 108,609.80, 162,914.70 and 75,432.20 is: 113,148.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,609.80 : 162,914.70 = 75,432.20 : x
  2. Step 2: Convert to fraction form
    108,609.80/162,914.70 = 75,432.20/x
  3. Step 3: Cross multiply
    108,609.80x = 162,914.70 × 75,432.20
  4. Step 4: Simplify right side
    108,609.80x = 12,289,014,233.34
  5. Step 5: Solve for x
    x = 12,289,014,233.34/108,609.80
  6. Step 6: Final answer
    x = 113,148.30

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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.