Home / 215,921.28-297,971.82-120,425.52

Finding the Fourth Proportional to 215,921.28, 297,971.82 and 120,425.52

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Solution

The fourth proportional to 215,921.28, 297,971.82 and 120,425.52 is: 166,187.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,921.28 : 297,971.82 = 120,425.52 : x
  2. Step 2: Convert to fraction form
    215,921.28/297,971.82 = 120,425.52/x
  3. Step 3: Cross multiply
    215,921.28x = 297,971.82 × 120,425.52
  4. Step 4: Simplify right side
    215,921.28x = 35,883,411,368.85
  5. Step 5: Solve for x
    x = 35,883,411,368.85/215,921.28
  6. Step 6: Final answer
    x = 166,187.47

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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.