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Finding the Fourth Proportional to 159,290.56, 219,821 and 86,693.73

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Solution

The fourth proportional to 159,290.56, 219,821 and 86,693.73 is: 119,637.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,290.56 : 219,821 = 86,693.73 : x
  2. Step 2: Convert to fraction form
    159,290.56/219,821 = 86,693.73/x
  3. Step 3: Cross multiply
    159,290.56x = 219,821 × 86,693.73
  4. Step 4: Simplify right side
    159,290.56x = 19,057,102,422.33
  5. Step 5: Solve for x
    x = 19,057,102,422.33/159,290.56
  6. Step 6: Final answer
    x = 119,637.36

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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.