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Finding the Fourth Proportional to 115,167, 172,619.52 and 70,089

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Solution

The fourth proportional to 115,167, 172,619.52 and 70,089 is: 105,053.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,167 : 172,619.52 = 70,089 : x
  2. Step 2: Convert to fraction form
    115,167/172,619.52 = 70,089/x
  3. Step 3: Cross multiply
    115,167x = 172,619.52 × 70,089
  4. Step 4: Simplify right side
    115,167x = 12,098,729,537.28
  5. Step 5: Solve for x
    x = 12,098,729,537.28/115,167
  6. Step 6: Final answer
    x = 105,053.79

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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.