Home / 149,490.91-206,293.62-81,508.02

Finding the Fourth Proportional to 149,490.91, 206,293.62 and 81,508.02

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Solution

The fourth proportional to 149,490.91, 206,293.62 and 81,508.02 is: 112,478.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,490.91 : 206,293.62 = 81,508.02 : x
  2. Step 2: Convert to fraction form
    149,490.91/206,293.62 = 81,508.02/x
  3. Step 3: Cross multiply
    149,490.91x = 206,293.62 × 81,508.02
  4. Step 4: Simplify right side
    149,490.91x = 16,814,584,504.83
  5. Step 5: Solve for x
    x = 16,814,584,504.83/149,490.91
  6. Step 6: Final answer
    x = 112,478.98

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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.