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Finding the Fourth Proportional to 159,978.38, 220,751.27 and 88,354.13

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Solution

The fourth proportional to 159,978.38, 220,751.27 and 88,354.13 is: 121,918.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,978.38 : 220,751.27 = 88,354.13 : x
  2. Step 2: Convert to fraction form
    159,978.38/220,751.27 = 88,354.13/x
  3. Step 3: Cross multiply
    159,978.38x = 220,751.27 × 88,354.13
  4. Step 4: Simplify right side
    159,978.38x = 19,504,285,303.49
  5. Step 5: Solve for x
    x = 19,504,285,303.49/159,978.38
  6. Step 6: Final answer
    x = 121,918.26

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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.