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Finding the Fourth Proportional to 159,911.76, 220,681.67 and 88,296.31

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Solution

The fourth proportional to 159,911.76, 220,681.67 and 88,296.31 is: 121,850.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,911.76 : 220,681.67 = 88,296.31 : x
  2. Step 2: Convert to fraction form
    159,911.76/220,681.67 = 88,296.31/x
  3. Step 3: Cross multiply
    159,911.76x = 220,681.67 × 88,296.31
  4. Step 4: Simplify right side
    159,911.76x = 19,485,377,145.64
  5. Step 5: Solve for x
    x = 19,485,377,145.64/159,911.76
  6. Step 6: Final answer
    x = 121,850.81

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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.