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Finding the Fourth Proportional to 111,666.20, 167,207.70 and 72,008.60

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Solution

The fourth proportional to 111,666.20, 167,207.70 and 72,008.60 is: 107,824.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,666.20 : 167,207.70 = 72,008.60 : x
  2. Step 2: Convert to fraction form
    111,666.20/167,207.70 = 72,008.60/x
  3. Step 3: Cross multiply
    111,666.20x = 167,207.70 × 72,008.60
  4. Step 4: Simplify right side
    111,666.20x = 12,040,392,386.22
  5. Step 5: Solve for x
    x = 12,040,392,386.22/111,666.20
  6. Step 6: Final answer
    x = 107,824.86

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1.5x scale

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.