Home / 212,221.56-292,907.36-121,638.25

Finding the Fourth Proportional to 212,221.56, 292,907.36 and 121,638.25

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Solution

The fourth proportional to 212,221.56, 292,907.36 and 121,638.25 is: 167,884.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,221.56 : 292,907.36 = 121,638.25 : x
  2. Step 2: Convert to fraction form
    212,221.56/292,907.36 = 121,638.25/x
  3. Step 3: Cross multiply
    212,221.56x = 292,907.36 × 121,638.25
  4. Step 4: Simplify right side
    212,221.56x = 35,628,737,217.98
  5. Step 5: Solve for x
    x = 35,628,737,217.98/212,221.56
  6. Step 6: Final answer
    x = 167,884.63

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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.