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Finding the Fourth Proportional to 70,166.93, 105,237.68 and 20,234.75

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Solution

The fourth proportional to 70,166.93, 105,237.68 and 20,234.75 is: 30,348.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,166.93 : 105,237.68 = 20,234.75 : x
  2. Step 2: Convert to fraction form
    70,166.93/105,237.68 = 20,234.75/x
  3. Step 3: Cross multiply
    70,166.93x = 105,237.68 × 20,234.75
  4. Step 4: Simplify right side
    70,166.93x = 2,129,457,518.02
  5. Step 5: Solve for x
    x = 2,129,457,518.02/70,166.93
  6. Step 6: Final answer
    x = 30,348.45

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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.