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Finding the Fourth Proportional to 159,674.40, 220,396.68 and 111,939.48

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Solution

The fourth proportional to 159,674.40, 220,396.68 and 111,939.48 is: 154,508.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,674.40 : 220,396.68 = 111,939.48 : x
  2. Step 2: Convert to fraction form
    159,674.40/220,396.68 = 111,939.48/x
  3. Step 3: Cross multiply
    159,674.40x = 220,396.68 × 111,939.48
  4. Step 4: Simplify right side
    159,674.40x = 24,671,089,752.93
  5. Step 5: Solve for x
    x = 24,671,089,752.93/159,674.40
  6. Step 6: Final answer
    x = 154,508.74

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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.