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Finding the Fourth Proportional to 172,370.68, 258,559.26 and 54,039.40

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Solution

The fourth proportional to 172,370.68, 258,559.26 and 54,039.40 is: 81,060.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,370.68 : 258,559.26 = 54,039.40 : x
  2. Step 2: Convert to fraction form
    172,370.68/258,559.26 = 54,039.40/x
  3. Step 3: Cross multiply
    172,370.68x = 258,559.26 × 54,039.40
  4. Step 4: Simplify right side
    172,370.68x = 13,972,387,274.84
  5. Step 5: Solve for x
    x = 13,972,387,274.84/172,370.68
  6. Step 6: Final answer
    x = 81,060.12

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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.