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Finding the Fourth Proportional to 129,816, 179,146.62 and 70,200

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Solution

The fourth proportional to 129,816, 179,146.62 and 70,200 is: 96,876.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,816 : 179,146.62 = 70,200 : x
  2. Step 2: Convert to fraction form
    129,816/179,146.62 = 70,200/x
  3. Step 3: Cross multiply
    129,816x = 179,146.62 × 70,200
  4. Step 4: Simplify right side
    129,816x = 12,576,092,724
  5. Step 5: Solve for x
    x = 12,576,092,724/129,816
  6. Step 6: Final answer
    x = 96,876.29

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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.