Home / 151,721,989.45-209,377,005.19-82,107,376.49

Finding the Fourth Proportional to 151,721,989.45, 209,377,005.19 and 82,107,376.49

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Solution

The fourth proportional to 151,721,989.45, 209,377,005.19 and 82,107,376.49 is: 113,308,536.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,721,989.45 : 209,377,005.19 = 82,107,376.49 : x
  2. Step 2: Convert to fraction form
    151,721,989.45/209,377,005.19 = 82,107,376.49/x
  3. Step 3: Cross multiply
    151,721,989.45x = 209,377,005.19 × 82,107,376.49
  4. Step 4: Simplify right side
    151,721,989.45x = 17,191,396,593,802,190
  5. Step 5: Solve for x
    x = 17,191,396,593,802,190/151,721,989.45
  6. Step 6: Final answer
    x = 113,308,536.60

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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.