Home / 117,145.02-161,618.31-71,806.62

Finding the Fourth Proportional to 117,145.02, 161,618.31 and 71,806.62

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Solution

The fourth proportional to 117,145.02, 161,618.31 and 71,806.62 is: 99,067.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,145.02 : 161,618.31 = 71,806.62 : x
  2. Step 2: Convert to fraction form
    117,145.02/161,618.31 = 71,806.62/x
  3. Step 3: Cross multiply
    117,145.02x = 161,618.31 × 71,806.62
  4. Step 4: Simplify right side
    117,145.02x = 11,605,264,571.21
  5. Step 5: Solve for x
    x = 11,605,264,571.21/117,145.02
  6. Step 6: Final answer
    x = 99,067.50

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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.