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Finding the Fourth Proportional to 159,958.94, 240,086.01 and 81,128.52

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Solution

The fourth proportional to 159,958.94, 240,086.01 and 81,128.52 is: 121,767.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,958.94 : 240,086.01 = 81,128.52 : x
  2. Step 2: Convert to fraction form
    159,958.94/240,086.01 = 81,128.52/x
  3. Step 3: Cross multiply
    159,958.94x = 240,086.01 × 81,128.52
  4. Step 4: Simplify right side
    159,958.94x = 19,477,822,258.36
  5. Step 5: Solve for x
    x = 19,477,822,258.36/159,958.94
  6. Step 6: Final answer
    x = 121,767.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.