Home / 131,275.20-196,912.80-61,161.60

Finding the Fourth Proportional to 131,275.20, 196,912.80 and 61,161.60

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Solution

The fourth proportional to 131,275.20, 196,912.80 and 61,161.60 is: 91,742.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,275.20 : 196,912.80 = 61,161.60 : x
  2. Step 2: Convert to fraction form
    131,275.20/196,912.80 = 61,161.60/x
  3. Step 3: Cross multiply
    131,275.20x = 196,912.80 × 61,161.60
  4. Step 4: Simplify right side
    131,275.20x = 12,043,501,908.48
  5. Step 5: Solve for x
    x = 12,043,501,908.48/131,275.20
  6. Step 6: Final answer
    x = 91,742.40

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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.