Home / 117,330.21-161,916.09-63,615.29

Finding the Fourth Proportional to 117,330.21, 161,916.09 and 63,615.29

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Solution

The fourth proportional to 117,330.21, 161,916.09 and 63,615.29 is: 87,789.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,330.21 : 161,916.09 = 63,615.29 : x
  2. Step 2: Convert to fraction form
    117,330.21/161,916.09 = 63,615.29/x
  3. Step 3: Cross multiply
    117,330.21x = 161,916.09 × 63,615.29
  4. Step 4: Simplify right side
    117,330.21x = 10,300,338,211.44
  5. Step 5: Solve for x
    x = 10,300,338,211.44/117,330.21
  6. Step 6: Final answer
    x = 87,789.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.