Home / 172,556.16-258,783.14-77,731.52

Finding the Fourth Proportional to 172,556.16, 258,783.14 and 77,731.52

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Solution

The fourth proportional to 172,556.16, 258,783.14 and 77,731.52 is: 116,574.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,556.16 : 258,783.14 = 77,731.52 : x
  2. Step 2: Convert to fraction form
    172,556.16/258,783.14 = 77,731.52/x
  3. Step 3: Cross multiply
    172,556.16x = 258,783.14 × 77,731.52
  4. Step 4: Simplify right side
    172,556.16x = 20,115,606,822.57
  5. Step 5: Solve for x
    x = 20,115,606,822.57/172,556.16
  6. Step 6: Final answer
    x = 116,574.26

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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.