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Finding the Fourth Proportional to 115,820.32, 159,847.11 and 64,852.48

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Solution

The fourth proportional to 115,820.32, 159,847.11 and 64,852.48 is: 89,504.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,820.32 : 159,847.11 = 64,852.48 : x
  2. Step 2: Convert to fraction form
    115,820.32/159,847.11 = 64,852.48/x
  3. Step 3: Cross multiply
    115,820.32x = 159,847.11 × 64,852.48
  4. Step 4: Simplify right side
    115,820.32x = 10,366,481,504.33
  5. Step 5: Solve for x
    x = 10,366,481,504.33/115,820.32
  6. Step 6: Final answer
    x = 89,504.86

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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.