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Finding the Fourth Proportional to 129,633, 178,893.66 and 70,017

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Solution

The fourth proportional to 129,633, 178,893.66 and 70,017 is: 96,623.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,633 : 178,893.66 = 70,017 : x
  2. Step 2: Convert to fraction form
    129,633/178,893.66 = 70,017/x
  3. Step 3: Cross multiply
    129,633x = 178,893.66 × 70,017
  4. Step 4: Simplify right side
    129,633x = 12,525,597,392.22
  5. Step 5: Solve for x
    x = 12,525,597,392.22/129,633
  6. Step 6: Final answer
    x = 96,623.52

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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.