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Finding the Fourth Proportional to 172,550.88, 258,642 and 123,153.12

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Solution

The fourth proportional to 172,550.88, 258,642 and 123,153.12 is: 184,598.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,550.88 : 258,642 = 123,153.12 : x
  2. Step 2: Convert to fraction form
    172,550.88/258,642 = 123,153.12/x
  3. Step 3: Cross multiply
    172,550.88x = 258,642 × 123,153.12
  4. Step 4: Simplify right side
    172,550.88x = 31,852,569,263.04
  5. Step 5: Solve for x
    x = 31,852,569,263.04/172,550.88
  6. Step 6: Final answer
    x = 184,598.13

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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.