Home / 149,581.08-206,422.47-81,599.49

Finding the Fourth Proportional to 149,581.08, 206,422.47 and 81,599.49

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Solution

The fourth proportional to 149,581.08, 206,422.47 and 81,599.49 is: 112,607.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,581.08 : 206,422.47 = 81,599.49 : x
  2. Step 2: Convert to fraction form
    149,581.08/206,422.47 = 81,599.49/x
  3. Step 3: Cross multiply
    149,581.08x = 206,422.47 × 81,599.49
  4. Step 4: Simplify right side
    149,581.08x = 16,843,968,276.54
  5. Step 5: Solve for x
    x = 16,843,968,276.54/149,581.08
  6. Step 6: Final answer
    x = 112,607.61

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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.