Home / 131,028.60-196,688.70-71,979.60

Finding the Fourth Proportional to 131,028.60, 196,688.70 and 71,979.60

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Solution

The fourth proportional to 131,028.60, 196,688.70 and 71,979.60 is: 108,049.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,028.60 : 196,688.70 = 71,979.60 : x
  2. Step 2: Convert to fraction form
    131,028.60/196,688.70 = 71,979.60/x
  3. Step 3: Cross multiply
    131,028.60x = 196,688.70 × 71,979.60
  4. Step 4: Simplify right side
    131,028.60x = 14,157,573,950.52
  5. Step 5: Solve for x
    x = 14,157,573,950.52/131,028.60
  6. Step 6: Final answer
    x = 108,049.49

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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.