Home / 115,005.30-172,503.09-36,117.78

Finding the Fourth Proportional to 115,005.30, 172,503.09 and 36,117.78

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Solution

The fourth proportional to 115,005.30, 172,503.09 and 36,117.78 is: 54,175.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,005.30 : 172,503.09 = 36,117.78 : x
  2. Step 2: Convert to fraction form
    115,005.30/172,503.09 = 36,117.78/x
  3. Step 3: Cross multiply
    115,005.30x = 172,503.09 × 36,117.78
  4. Step 4: Simplify right side
    115,005.30x = 6,230,428,653.94
  5. Step 5: Solve for x
    x = 6,230,428,653.94/115,005.30
  6. Step 6: Final answer
    x = 54,175.14

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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.