Home / 115,005.04-172,564.07-51,868.78

Finding the Fourth Proportional to 115,005.04, 172,564.07 and 51,868.78

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Solution

The fourth proportional to 115,005.04, 172,564.07 and 51,868.78 is: 77,828.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,005.04 : 172,564.07 = 51,868.78 : x
  2. Step 2: Convert to fraction form
    115,005.04/172,564.07 = 51,868.78/x
  3. Step 3: Cross multiply
    115,005.04x = 172,564.07 × 51,868.78
  4. Step 4: Simplify right side
    115,005.04x = 8,950,687,091.98
  5. Step 5: Solve for x
    x = 8,950,687,091.98/115,005.04
  6. Step 6: Final answer
    x = 77,828.65

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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.