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Finding the Fourth Proportional to 129,796.64, 179,118.48 and 70,180.64

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Solution

The fourth proportional to 129,796.64, 179,118.48 and 70,180.64 is: 96,848.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,796.64 : 179,118.48 = 70,180.64 : x
  2. Step 2: Convert to fraction form
    129,796.64/179,118.48 = 70,180.64/x
  3. Step 3: Cross multiply
    129,796.64x = 179,118.48 × 70,180.64
  4. Step 4: Simplify right side
    129,796.64x = 12,570,649,562.23
  5. Step 5: Solve for x
    x = 12,570,649,562.23/129,796.64
  6. Step 6: Final answer
    x = 96,848.81

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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.