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Finding the Fourth Proportional to 155,458.44, 214,523.64 and 91,773

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Solution

The fourth proportional to 155,458.44, 214,523.64 and 91,773 is: 126,641.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,458.44 : 214,523.64 = 91,773 : x
  2. Step 2: Convert to fraction form
    155,458.44/214,523.64 = 91,773/x
  3. Step 3: Cross multiply
    155,458.44x = 214,523.64 × 91,773
  4. Step 4: Simplify right side
    155,458.44x = 19,687,478,013.72
  5. Step 5: Solve for x
    x = 19,687,478,013.72/155,458.44
  6. Step 6: Final answer
    x = 126,641.42

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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.