Home / 117,121,139,015.10-161,630,581,282.74-66,370,394,187.42

Finding the Fourth Proportional to 117,121,139,015.10, 161,630,581,282.74 and 66,370,394,187.42

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Solution

The fourth proportional to 117,121,139,015.10, 161,630,581,282.74 and 66,370,394,187.42 is: 91,593,076,046.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,121,139,015.10 : 161,630,581,282.74 = 66,370,394,187.42 : x
  2. Step 2: Convert to fraction form
    117,121,139,015.10/161,630,581,282.74 = 66,370,394,187.42/x
  3. Step 3: Cross multiply
    117,121,139,015.10x = 161,630,581,282.74 × 66,370,394,187.42
  4. Step 4: Simplify right side
    117,121,139,015.10x = 10,727,485,392,477,281,583,104
  5. Step 5: Solve for x
    x = 10,727,485,392,477,281,583,104/117,121,139,015.10
  6. Step 6: Final answer
    x = 91,593,076,046.62

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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.