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Finding the Fourth Proportional to 141,064.70, 194,669.27 and 80,636.64

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Solution

The fourth proportional to 141,064.70, 194,669.27 and 80,636.64 is: 111,278.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,064.70 : 194,669.27 = 80,636.64 : x
  2. Step 2: Convert to fraction form
    141,064.70/194,669.27 = 80,636.64/x
  3. Step 3: Cross multiply
    141,064.70x = 194,669.27 × 80,636.64
  4. Step 4: Simplify right side
    141,064.70x = 15,697,475,013.25
  5. Step 5: Solve for x
    x = 15,697,475,013.25/141,064.70
  6. Step 6: Final answer
    x = 111,278.55

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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.