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Finding the Fourth Proportional to 172,418.51, 258,635.06 and 60,109.98

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Solution

The fourth proportional to 172,418.51, 258,635.06 and 60,109.98 is: 90,167.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,418.51 : 258,635.06 = 60,109.98 : x
  2. Step 2: Convert to fraction form
    172,418.51/258,635.06 = 60,109.98/x
  3. Step 3: Cross multiply
    172,418.51x = 258,635.06 × 60,109.98
  4. Step 4: Simplify right side
    172,418.51x = 15,546,547,983.35
  5. Step 5: Solve for x
    x = 15,546,547,983.35/172,418.51
  6. Step 6: Final answer
    x = 90,167.51

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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.