Home / 129,971.49-194,513.64-108,935.29

Finding the Fourth Proportional to 129,971.49, 194,513.64 and 108,935.29

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Solution

The fourth proportional to 129,971.49, 194,513.64 and 108,935.29 is: 163,031.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,971.49 : 194,513.64 = 108,935.29 : x
  2. Step 2: Convert to fraction form
    129,971.49/194,513.64 = 108,935.29/x
  3. Step 3: Cross multiply
    129,971.49x = 194,513.64 × 108,935.29
  4. Step 4: Simplify right side
    129,971.49x = 21,189,399,782.36
  5. Step 5: Solve for x
    x = 21,189,399,782.36/129,971.49
  6. Step 6: Final answer
    x = 163,031.14

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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.