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Finding the Fourth Proportional to 121,704.21, 167,918.53 and 83,473.22

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Solution

The fourth proportional to 121,704.21, 167,918.53 and 83,473.22 is: 115,170.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,704.21 : 167,918.53 = 83,473.22 : x
  2. Step 2: Convert to fraction form
    121,704.21/167,918.53 = 83,473.22/x
  3. Step 3: Cross multiply
    121,704.21x = 167,918.53 × 83,473.22
  4. Step 4: Simplify right side
    121,704.21x = 14,016,700,396.77
  5. Step 5: Solve for x
    x = 14,016,700,396.77/121,704.21
  6. Step 6: Final answer
    x = 115,170.22

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1.5x scale

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.