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Finding the Fourth Proportional to 177,999.90, 266,998.77 and 71,431.98

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Solution

The fourth proportional to 177,999.90, 266,998.77 and 71,431.98 is: 107,147.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,999.90 : 266,998.77 = 71,431.98 : x
  2. Step 2: Convert to fraction form
    177,999.90/266,998.77 = 71,431.98/x
  3. Step 3: Cross multiply
    177,999.90x = 266,998.77 × 71,431.98
  4. Step 4: Simplify right side
    177,999.90x = 19,072,250,798.66
  5. Step 5: Solve for x
    x = 19,072,250,798.66/177,999.90
  6. Step 6: Final answer
    x = 107,147.54

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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.