Home / 151,721,992.69-209,377,009.68-82,107,379.75

Finding the Fourth Proportional to 151,721,992.69, 209,377,009.68 and 82,107,379.75

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Solution

The fourth proportional to 151,721,992.69, 209,377,009.68 and 82,107,379.75 is: 113,308,541.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,721,992.69 : 209,377,009.68 = 82,107,379.75 : x
  2. Step 2: Convert to fraction form
    151,721,992.69/209,377,009.68 = 82,107,379.75/x
  3. Step 3: Cross multiply
    151,721,992.69x = 209,377,009.68 × 82,107,379.75
  4. Step 4: Simplify right side
    151,721,992.69x = 17,191,397,644,715,186
  5. Step 5: Solve for x
    x = 17,191,397,644,715,186/151,721,992.69
  6. Step 6: Final answer
    x = 113,308,541.10

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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.