Home / 117,338.56-161,915.22-72,018.44

Finding the Fourth Proportional to 117,338.56, 161,915.22 and 72,018.44

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Solution

The fourth proportional to 117,338.56, 161,915.22 and 72,018.44 is: 99,378.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,338.56 : 161,915.22 = 72,018.44 : x
  2. Step 2: Convert to fraction form
    117,338.56/161,915.22 = 72,018.44/x
  3. Step 3: Cross multiply
    117,338.56x = 161,915.22 × 72,018.44
  4. Step 4: Simplify right side
    117,338.56x = 11,660,881,556.66
  5. Step 5: Solve for x
    x = 11,660,881,556.66/117,338.56
  6. Step 6: Final answer
    x = 99,378.09

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1.5x scale

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.