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Finding the Fourth Proportional to 172,637.84, 258,908.52 and 109,363.88

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Solution

The fourth proportional to 172,637.84, 258,908.52 and 109,363.88 is: 164,015.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,637.84 : 258,908.52 = 109,363.88 : x
  2. Step 2: Convert to fraction form
    172,637.84/258,908.52 = 109,363.88/x
  3. Step 3: Cross multiply
    172,637.84x = 258,908.52 × 109,363.88
  4. Step 4: Simplify right side
    172,637.84x = 28,315,240,312.26
  5. Step 5: Solve for x
    x = 28,315,240,312.26/172,637.84
  6. Step 6: Final answer
    x = 164,015.26

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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.