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Finding the Fourth Proportional to 167,438.72, 252,309.11 and 138,504.71

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Solution

The fourth proportional to 167,438.72, 252,309.11 and 138,504.71 is: 208,709.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,438.72 : 252,309.11 = 138,504.71 : x
  2. Step 2: Convert to fraction form
    167,438.72/252,309.11 = 138,504.71/x
  3. Step 3: Cross multiply
    167,438.72x = 252,309.11 × 138,504.71
  4. Step 4: Simplify right side
    167,438.72x = 34,946,000,110.91
  5. Step 5: Solve for x
    x = 34,946,000,110.91/167,438.72
  6. Step 6: Final answer
    x = 208,709.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.