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Finding the Fourth Proportional to 72,154.38, 108,242.34 and 22,230.30

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Solution

The fourth proportional to 72,154.38, 108,242.34 and 22,230.30 is: 33,348.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,154.38 : 108,242.34 = 22,230.30 : x
  2. Step 2: Convert to fraction form
    72,154.38/108,242.34 = 22,230.30/x
  3. Step 3: Cross multiply
    72,154.38x = 108,242.34 × 22,230.30
  4. Step 4: Simplify right side
    72,154.38x = 2,406,259,690.90
  5. Step 5: Solve for x
    x = 2,406,259,690.90/72,154.38
  6. Step 6: Final answer
    x = 33,348.77

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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.