Home / 81,071,086.82-121,727,975.94-70,175,070.09

Finding the Fourth Proportional to 81,071,086.82, 121,727,975.94 and 70,175,070.09

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Solution

The fourth proportional to 81,071,086.82, 121,727,975.94 and 70,175,070.09 is: 105,367,641.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,071,086.82 : 121,727,975.94 = 70,175,070.09 : x
  2. Step 2: Convert to fraction form
    81,071,086.82/121,727,975.94 = 70,175,070.09/x
  3. Step 3: Cross multiply
    81,071,086.82x = 121,727,975.94 × 70,175,070.09
  4. Step 4: Simplify right side
    81,071,086.82x = 8,542,269,243,503,334
  5. Step 5: Solve for x
    x = 8,542,269,243,503,334/81,071,086.82
  6. Step 6: Final answer
    x = 105,367,641.89

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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.