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Finding the Fourth Proportional to 115,481.64, 159,380.48 and 64,497.51

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Solution

The fourth proportional to 115,481.64, 159,380.48 and 64,497.51 is: 89,015.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,481.64 : 159,380.48 = 64,497.51 : x
  2. Step 2: Convert to fraction form
    115,481.64/159,380.48 = 64,497.51/x
  3. Step 3: Cross multiply
    115,481.64x = 159,380.48 × 64,497.51
  4. Step 4: Simplify right side
    115,481.64x = 10,279,644,263.85
  5. Step 5: Solve for x
    x = 10,279,644,263.85/115,481.64
  6. Step 6: Final answer
    x = 89,015.40

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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.