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Finding the Fourth Proportional to 102,666.22, 153,999.33 and 67,157.39

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Solution

The fourth proportional to 102,666.22, 153,999.33 and 67,157.39 is: 100,736.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,666.22 : 153,999.33 = 67,157.39 : x
  2. Step 2: Convert to fraction form
    102,666.22/153,999.33 = 67,157.39/x
  3. Step 3: Cross multiply
    102,666.22x = 153,999.33 × 67,157.39
  4. Step 4: Simplify right side
    102,666.22x = 10,342,193,197.71
  5. Step 5: Solve for x
    x = 10,342,193,197.71/102,666.22
  6. Step 6: Final answer
    x = 100,736.09

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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.