Home / 130,998.20-196,691.70-91,729.40

Finding the Fourth Proportional to 130,998.20, 196,691.70 and 91,729.40

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Solution

The fourth proportional to 130,998.20, 196,691.70 and 91,729.40 is: 137,730.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,998.20 : 196,691.70 = 91,729.40 : x
  2. Step 2: Convert to fraction form
    130,998.20/196,691.70 = 91,729.40/x
  3. Step 3: Cross multiply
    130,998.20x = 196,691.70 × 91,729.40
  4. Step 4: Simplify right side
    130,998.20x = 18,042,411,625.98
  5. Step 5: Solve for x
    x = 18,042,411,625.98/130,998.20
  6. Step 6: Final answer
    x = 137,730.23

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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.