Home / 151,721,991.69-209,377,008.30-82,107,378.75

Finding the Fourth Proportional to 151,721,991.69, 209,377,008.30 and 82,107,378.75

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Solution

The fourth proportional to 151,721,991.69, 209,377,008.30 and 82,107,378.75 is: 113,308,539.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,721,991.69 : 209,377,008.30 = 82,107,378.75 : x
  2. Step 2: Convert to fraction form
    151,721,991.69/209,377,008.30 = 82,107,378.75/x
  3. Step 3: Cross multiply
    151,721,991.69x = 209,377,008.30 × 82,107,378.75
  4. Step 4: Simplify right side
    151,721,991.69x = 17,191,397,322,029,994
  5. Step 5: Solve for x
    x = 17,191,397,322,029,994/151,721,991.69
  6. Step 6: Final answer
    x = 113,308,539.72

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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.