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Finding the Fourth Proportional to 137,403.72, 207,164.84 and 136,550.79

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Solution

The fourth proportional to 137,403.72, 207,164.84 and 136,550.79 is: 205,878.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,403.72 : 207,164.84 = 136,550.79 : x
  2. Step 2: Convert to fraction form
    137,403.72/207,164.84 = 136,550.79/x
  3. Step 3: Cross multiply
    137,403.72x = 207,164.84 × 136,550.79
  4. Step 4: Simplify right side
    137,403.72x = 28,288,521,879.47
  5. Step 5: Solve for x
    x = 28,288,521,879.47/137,403.72
  6. Step 6: Final answer
    x = 205,878.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.