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Finding the Fourth Proportional to 151,987.98, 209,736.87 and 84,001.44

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Solution

The fourth proportional to 151,987.98, 209,736.87 and 84,001.44 is: 115,918.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,987.98 : 209,736.87 = 84,001.44 : x
  2. Step 2: Convert to fraction form
    151,987.98/209,736.87 = 84,001.44/x
  3. Step 3: Cross multiply
    151,987.98x = 209,736.87 × 84,001.44
  4. Step 4: Simplify right side
    151,987.98x = 17,618,199,101.09
  5. Step 5: Solve for x
    x = 17,618,199,101.09/151,987.98
  6. Step 6: Final answer
    x = 115,918.37

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1.5x scale

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.