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Finding the Fourth Proportional to 151,987.59, 209,736.36 and 84,001.05

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Solution

The fourth proportional to 151,987.59, 209,736.36 and 84,001.05 is: 115,917.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,987.59 : 209,736.36 = 84,001.05 : x
  2. Step 2: Convert to fraction form
    151,987.59/209,736.36 = 84,001.05/x
  3. Step 3: Cross multiply
    151,987.59x = 209,736.36 × 84,001.05
  4. Step 4: Simplify right side
    151,987.59x = 17,618,074,463.18
  5. Step 5: Solve for x
    x = 17,618,074,463.18/151,987.59
  6. Step 6: Final answer
    x = 115,917.85

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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.