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Finding the Fourth Proportional to 172,556.67, 258,703.25 and 54,159.51

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Solution

The fourth proportional to 172,556.67, 258,703.25 and 54,159.51 is: 81,197.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,556.67 : 258,703.25 = 54,159.51 : x
  2. Step 2: Convert to fraction form
    172,556.67/258,703.25 = 54,159.51/x
  3. Step 3: Cross multiply
    172,556.67x = 258,703.25 × 54,159.51
  4. Step 4: Simplify right side
    172,556.67x = 14,011,240,984.61
  5. Step 5: Solve for x
    x = 14,011,240,984.61/172,556.67
  6. Step 6: Final answer
    x = 81,197.91

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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.