Home / 132,042.80-197,795.40-81,969.20

Finding the Fourth Proportional to 132,042.80, 197,795.40 and 81,969.20

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Solution

The fourth proportional to 132,042.80, 197,795.40 and 81,969.20 is: 122,786.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,042.80 : 197,795.40 = 81,969.20 : x
  2. Step 2: Convert to fraction form
    132,042.80/197,795.40 = 81,969.20/x
  3. Step 3: Cross multiply
    132,042.80x = 197,795.40 × 81,969.20
  4. Step 4: Simplify right side
    132,042.80x = 16,213,130,701.68
  5. Step 5: Solve for x
    x = 16,213,130,701.68/132,042.80
  6. Step 6: Final answer
    x = 122,786.94

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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.