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Finding the Fourth Proportional to 172,543.25, 258,840.99 and 54,203.46

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Solution

The fourth proportional to 172,543.25, 258,840.99 and 54,203.46 is: 81,313.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,543.25 : 258,840.99 = 54,203.46 : x
  2. Step 2: Convert to fraction form
    172,543.25/258,840.99 = 54,203.46/x
  3. Step 3: Cross multiply
    172,543.25x = 258,840.99 × 54,203.46
  4. Step 4: Simplify right side
    172,543.25x = 14,030,077,247.83
  5. Step 5: Solve for x
    x = 14,030,077,247.83/172,543.25
  6. Step 6: Final answer
    x = 81,313.40

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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.