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Finding the Fourth Proportional to 111,126.34, 166,659.90 and 31,159.90

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Solution

The fourth proportional to 111,126.34, 166,659.90 and 31,159.90 is: 46,731.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,126.34 : 166,659.90 = 31,159.90 : x
  2. Step 2: Convert to fraction form
    111,126.34/166,659.90 = 31,159.90/x
  3. Step 3: Cross multiply
    111,126.34x = 166,659.90 × 31,159.90
  4. Step 4: Simplify right side
    111,126.34x = 5,193,105,818.01
  5. Step 5: Solve for x
    x = 5,193,105,818.01/111,126.34
  6. Step 6: Final answer
    x = 46,731.55

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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.