Home / 213,956.82-320,938.88-80,899.74

Finding the Fourth Proportional to 213,956.82, 320,938.88 and 80,899.74

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Solution

The fourth proportional to 213,956.82, 320,938.88 and 80,899.74 is: 121,350.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,956.82 : 320,938.88 = 80,899.74 : x
  2. Step 2: Convert to fraction form
    213,956.82/320,938.88 = 80,899.74/x
  3. Step 3: Cross multiply
    213,956.82x = 320,938.88 × 80,899.74
  4. Step 4: Simplify right side
    213,956.82x = 25,963,871,543.39
  5. Step 5: Solve for x
    x = 25,963,871,543.39/213,956.82
  6. Step 6: Final answer
    x = 121,350.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.