Home / 117,121,138,992.54-161,630,581,251.60-66,370,394,164.86

Finding the Fourth Proportional to 117,121,138,992.54, 161,630,581,251.60 and 66,370,394,164.86

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Solution

The fourth proportional to 117,121,138,992.54, 161,630,581,251.60 and 66,370,394,164.86 is: 91,593,076,015.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,121,138,992.54 : 161,630,581,251.60 = 66,370,394,164.86 : x
  2. Step 2: Convert to fraction form
    117,121,138,992.54/161,630,581,251.60 = 66,370,394,164.86/x
  3. Step 3: Cross multiply
    117,121,138,992.54x = 161,630,581,251.60 × 66,370,394,164.86
  4. Step 4: Simplify right side
    117,121,138,992.54x = 10,727,485,386,764,123,635,712
  5. Step 5: Solve for x
    x = 10,727,485,386,764,123,635,712/117,121,138,992.54
  6. Step 6: Final answer
    x = 91,593,076,015.49

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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.