Home / 137,664.80-206,618.70-81,434.60

Finding the Fourth Proportional to 137,664.80, 206,618.70 and 81,434.60

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Solution

The fourth proportional to 137,664.80, 206,618.70 and 81,434.60 is: 122,223.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,664.80 : 206,618.70 = 81,434.60 : x
  2. Step 2: Convert to fraction form
    137,664.80/206,618.70 = 81,434.60/x
  3. Step 3: Cross multiply
    137,664.80x = 206,618.70 × 81,434.60
  4. Step 4: Simplify right side
    137,664.80x = 16,825,911,187.02
  5. Step 5: Solve for x
    x = 16,825,911,187.02/137,664.80
  6. Step 6: Final answer
    x = 122,223.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.