Home / 212,116.98-292,722.39-115,321.78

Finding the Fourth Proportional to 212,116.98, 292,722.39 and 115,321.78

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Solution

The fourth proportional to 212,116.98, 292,722.39 and 115,321.78 is: 159,144.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,116.98 : 292,722.39 = 115,321.78 : x
  2. Step 2: Convert to fraction form
    212,116.98/292,722.39 = 115,321.78/x
  3. Step 3: Cross multiply
    212,116.98x = 292,722.39 × 115,321.78
  4. Step 4: Simplify right side
    212,116.98x = 33,757,267,060.65
  5. Step 5: Solve for x
    x = 33,757,267,060.65/212,116.98
  6. Step 6: Final answer
    x = 159,144.58

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1.5x scale

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.