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Finding the Fourth Proportional to 110,775.81, 166,162.41 and 75,148.86

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Solution

The fourth proportional to 110,775.81, 166,162.41 and 75,148.86 is: 112,722.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,775.81 : 166,162.41 = 75,148.86 : x
  2. Step 2: Convert to fraction form
    110,775.81/166,162.41 = 75,148.86/x
  3. Step 3: Cross multiply
    110,775.81x = 166,162.41 × 75,148.86
  4. Step 4: Simplify right side
    110,775.81x = 12,486,915,686.35
  5. Step 5: Solve for x
    x = 12,486,915,686.35/110,775.81
  6. Step 6: Final answer
    x = 112,722.40

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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.