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Finding the Fourth Proportional to 159,590.86, 220,235.97 and 86,993.38

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Solution

The fourth proportional to 159,590.86, 220,235.97 and 86,993.38 is: 120,051.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,590.86 : 220,235.97 = 86,993.38 : x
  2. Step 2: Convert to fraction form
    159,590.86/220,235.97 = 86,993.38/x
  3. Step 3: Cross multiply
    159,590.86x = 220,235.97 × 86,993.38
  4. Step 4: Simplify right side
    159,590.86x = 19,159,071,427.88
  5. Step 5: Solve for x
    x = 19,159,071,427.88/159,590.86
  6. Step 6: Final answer
    x = 120,051.18

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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.