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Finding the Fourth Proportional to 172,502.92, 258,754.44 and 77,622.28

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Solution

The fourth proportional to 172,502.92, 258,754.44 and 77,622.28 is: 116,433.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,502.92 : 258,754.44 = 77,622.28 : x
  2. Step 2: Convert to fraction form
    172,502.92/258,754.44 = 77,622.28/x
  3. Step 3: Cross multiply
    172,502.92x = 258,754.44 × 77,622.28
  4. Step 4: Simplify right side
    172,502.92x = 20,085,109,592.92
  5. Step 5: Solve for x
    x = 20,085,109,592.92/172,502.92
  6. Step 6: Final answer
    x = 116,433.45

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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.