Home / 212,987.52-293,912.88-122,279.63

Finding the Fourth Proportional to 212,987.52, 293,912.88 and 122,279.63

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Solution

The fourth proportional to 212,987.52, 293,912.88 and 122,279.63 is: 168,740.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,987.52 : 293,912.88 = 122,279.63 : x
  2. Step 2: Convert to fraction form
    212,987.52/293,912.88 = 122,279.63/x
  3. Step 3: Cross multiply
    212,987.52x = 293,912.88 × 122,279.63
  4. Step 4: Simplify right side
    212,987.52x = 35,939,558,218.63
  5. Step 5: Solve for x
    x = 35,939,558,218.63/212,987.52
  6. Step 6: Final answer
    x = 168,740.21

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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.