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Finding the Fourth Proportional to 111,425.38, 153,709.76 and 73,179.44

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Solution

The fourth proportional to 111,425.38, 153,709.76 and 73,179.44 is: 100,950.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,425.38 : 153,709.76 = 73,179.44 : x
  2. Step 2: Convert to fraction form
    111,425.38/153,709.76 = 73,179.44/x
  3. Step 3: Cross multiply
    111,425.38x = 153,709.76 × 73,179.44
  4. Step 4: Simplify right side
    111,425.38x = 11,248,394,159.33
  5. Step 5: Solve for x
    x = 11,248,394,159.33/111,425.38
  6. Step 6: Final answer
    x = 100,950.02

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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.