Home / 171,680.38-257,434.40-81,696.26

Finding the Fourth Proportional to 171,680.38, 257,434.40 and 81,696.26

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Solution

The fourth proportional to 171,680.38, 257,434.40 and 81,696.26 is: 122,503.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,680.38 : 257,434.40 = 81,696.26 : x
  2. Step 2: Convert to fraction form
    171,680.38/257,434.40 = 81,696.26/x
  3. Step 3: Cross multiply
    171,680.38x = 257,434.40 × 81,696.26
  4. Step 4: Simplify right side
    171,680.38x = 21,031,428,523.17
  5. Step 5: Solve for x
    x = 21,031,428,523.17/171,680.38
  6. Step 6: Final answer
    x = 122,503.39

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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.