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Finding the Fourth Proportional to 111,398.90, 167,155.79 and 73,984.86

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Solution

The fourth proportional to 111,398.90, 167,155.79 and 73,984.86 is: 111,015.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,398.90 : 167,155.79 = 73,984.86 : x
  2. Step 2: Convert to fraction form
    111,398.90/167,155.79 = 73,984.86/x
  3. Step 3: Cross multiply
    111,398.90x = 167,155.79 × 73,984.86
  4. Step 4: Simplify right side
    111,398.90x = 12,366,997,351.42
  5. Step 5: Solve for x
    x = 12,366,997,351.42/111,398.90
  6. Step 6: Final answer
    x = 111,015.44

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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.