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Finding the Fourth Proportional to 151,793.71, 209,493.77 and 88,131.51

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Solution

The fourth proportional to 151,793.71, 209,493.77 and 88,131.51 is: 121,632.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,793.71 : 209,493.77 = 88,131.51 : x
  2. Step 2: Convert to fraction form
    151,793.71/209,493.77 = 88,131.51/x
  3. Step 3: Cross multiply
    151,793.71x = 209,493.77 × 88,131.51
  4. Step 4: Simplify right side
    151,793.71x = 18,463,001,238.22
  5. Step 5: Solve for x
    x = 18,463,001,238.22/151,793.71
  6. Step 6: Final answer
    x = 121,632.19

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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.