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Finding the Fourth Proportional to 111,698.55, 167,630.89 and 45,139.26

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Solution

The fourth proportional to 111,698.55, 167,630.89 and 45,139.26 is: 67,742.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,698.55 : 167,630.89 = 45,139.26 : x
  2. Step 2: Convert to fraction form
    111,698.55/167,630.89 = 45,139.26/x
  3. Step 3: Cross multiply
    111,698.55x = 167,630.89 × 45,139.26
  4. Step 4: Simplify right side
    111,698.55x = 7,566,734,327.74
  5. Step 5: Solve for x
    x = 7,566,734,327.74/111,698.55
  6. Step 6: Final answer
    x = 67,742.46

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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.