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Finding the Fourth Proportional to 158,229.23, 218,354.44 and 85,630.43

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Solution

The fourth proportional to 158,229.23, 218,354.44 and 85,630.43 is: 118,168.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,229.23 : 218,354.44 = 85,630.43 : x
  2. Step 2: Convert to fraction form
    158,229.23/218,354.44 = 85,630.43/x
  3. Step 3: Cross multiply
    158,229.23x = 218,354.44 × 85,630.43
  4. Step 4: Simplify right side
    158,229.23x = 18,697,784,161.46
  5. Step 5: Solve for x
    x = 18,697,784,161.46/158,229.23
  6. Step 6: Final answer
    x = 118,168.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.