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Finding the Fourth Proportional to 151,987.96, 209,754.25 and 84,003.48

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Solution

The fourth proportional to 151,987.96, 209,754.25 and 84,003.48 is: 115,930.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,987.96 : 209,754.25 = 84,003.48 : x
  2. Step 2: Convert to fraction form
    151,987.96/209,754.25 = 84,003.48/x
  3. Step 3: Cross multiply
    151,987.96x = 209,754.25 × 84,003.48
  4. Step 4: Simplify right side
    151,987.96x = 17,620,085,896.02
  5. Step 5: Solve for x
    x = 17,620,085,896.02/151,987.96
  6. Step 6: Final answer
    x = 115,930.80

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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.