Home / 131,311.79-196,651.97-74,981.21

Finding the Fourth Proportional to 131,311.79, 196,651.97 and 74,981.21

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Solution

The fourth proportional to 131,311.79, 196,651.97 and 74,981.21 is: 112,291.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,311.79 : 196,651.97 = 74,981.21 : x
  2. Step 2: Convert to fraction form
    131,311.79/196,651.97 = 74,981.21/x
  3. Step 3: Cross multiply
    131,311.79x = 196,651.97 × 74,981.21
  4. Step 4: Simplify right side
    131,311.79x = 14,745,201,301.32
  5. Step 5: Solve for x
    x = 14,745,201,301.32/131,311.79
  6. Step 6: Final answer
    x = 112,291.53

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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.