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Finding the Fourth Proportional to 159,209.73, 219,740.81 and 91,272.31

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Solution

The fourth proportional to 159,209.73, 219,740.81 and 91,272.31 is: 125,973.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,209.73 : 219,740.81 = 91,272.31 : x
  2. Step 2: Convert to fraction form
    159,209.73/219,740.81 = 91,272.31/x
  3. Step 3: Cross multiply
    159,209.73x = 219,740.81 × 91,272.31
  4. Step 4: Simplify right side
    159,209.73x = 20,056,251,329.97
  5. Step 5: Solve for x
    x = 20,056,251,329.97/159,209.73
  6. Step 6: Final answer
    x = 125,973.78

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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.