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Finding the Fourth Proportional to 172,453.77, 258,744.78 and 77,655.42

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Solution

The fourth proportional to 172,453.77, 258,744.78 and 77,655.42 is: 116,512.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,453.77 : 258,744.78 = 77,655.42 : x
  2. Step 2: Convert to fraction form
    172,453.77/258,744.78 = 77,655.42/x
  3. Step 3: Cross multiply
    172,453.77x = 258,744.78 × 77,655.42
  4. Step 4: Simplify right side
    172,453.77x = 20,092,934,563.71
  5. Step 5: Solve for x
    x = 20,092,934,563.71/172,453.77
  6. Step 6: Final answer
    x = 116,512.01

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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.