Home / 212,780.70-293,554.98-122,103.90

Finding the Fourth Proportional to 212,780.70, 293,554.98 and 122,103.90

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Solution

The fourth proportional to 212,780.70, 293,554.98 and 122,103.90 is: 168,456.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,780.70 : 293,554.98 = 122,103.90 : x
  2. Step 2: Convert to fraction form
    212,780.70/293,554.98 = 122,103.90/x
  3. Step 3: Cross multiply
    212,780.70x = 293,554.98 × 122,103.90
  4. Step 4: Simplify right side
    212,780.70x = 35,844,207,922.42
  5. Step 5: Solve for x
    x = 35,844,207,922.42/212,780.70
  6. Step 6: Final answer
    x = 168,456.10

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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.