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Finding the Fourth Proportional to 159,481.23, 220,089.75 and 87,866.70

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Solution

The fourth proportional to 159,481.23, 220,089.75 and 87,866.70 is: 121,259.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,481.23 : 220,089.75 = 87,866.70 : x
  2. Step 2: Convert to fraction form
    159,481.23/220,089.75 = 87,866.70/x
  3. Step 3: Cross multiply
    159,481.23x = 220,089.75 × 87,866.70
  4. Step 4: Simplify right side
    159,481.23x = 19,338,560,036.33
  5. Step 5: Solve for x
    x = 19,338,560,036.33/159,481.23
  6. Step 6: Final answer
    x = 121,259.16

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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.