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Finding the Fourth Proportional to 129,794.50, 179,116.41 and 70,178.50

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Solution

The fourth proportional to 129,794.50, 179,116.41 and 70,178.50 is: 96,846.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,794.50 : 179,116.41 = 70,178.50 : x
  2. Step 2: Convert to fraction form
    129,794.50/179,116.41 = 70,178.50/x
  3. Step 3: Cross multiply
    129,794.50x = 179,116.41 × 70,178.50
  4. Step 4: Simplify right side
    129,794.50x = 12,570,120,979.19
  5. Step 5: Solve for x
    x = 12,570,120,979.19/129,794.50
  6. Step 6: Final answer
    x = 96,846.33

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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.