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Finding the Fourth Proportional to 70,151.10, 105,242.20 and 20,227.30

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Solution

The fourth proportional to 70,151.10, 105,242.20 and 20,227.30 is: 30,345.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,151.10 : 105,242.20 = 20,227.30 : x
  2. Step 2: Convert to fraction form
    70,151.10/105,242.20 = 20,227.30/x
  3. Step 3: Cross multiply
    70,151.10x = 105,242.20 × 20,227.30
  4. Step 4: Simplify right side
    70,151.10x = 2,128,765,552.06
  5. Step 5: Solve for x
    x = 2,128,765,552.06/70,151.10
  6. Step 6: Final answer
    x = 30,345.43

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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.