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Finding the Fourth Proportional to 70,165.43, 105,235.43 and 20,233.25

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Solution

The fourth proportional to 70,165.43, 105,235.43 and 20,233.25 is: 30,346.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,165.43 : 105,235.43 = 20,233.25 : x
  2. Step 2: Convert to fraction form
    70,165.43/105,235.43 = 20,233.25/x
  3. Step 3: Cross multiply
    70,165.43x = 105,235.43 × 20,233.25
  4. Step 4: Simplify right side
    70,165.43x = 2,129,254,136.70
  5. Step 5: Solve for x
    x = 2,129,254,136.70/70,165.43
  6. Step 6: Final answer
    x = 30,346.20

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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.