Home / 131,021.40-196,272.90-121,690.20

Finding the Fourth Proportional to 131,021.40, 196,272.90 and 121,690.20

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Solution

The fourth proportional to 131,021.40, 196,272.90 and 121,690.20 is: 182,294.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,021.40 : 196,272.90 = 121,690.20 : x
  2. Step 2: Convert to fraction form
    131,021.40/196,272.90 = 121,690.20/x
  3. Step 3: Cross multiply
    131,021.40x = 196,272.90 × 121,690.20
  4. Step 4: Simplify right side
    131,021.40x = 23,884,488,455.58
  5. Step 5: Solve for x
    x = 23,884,488,455.58/131,021.40
  6. Step 6: Final answer
    x = 182,294.56

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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.