Home / 172,717.89-259,112.07-72,878.10

Finding the Fourth Proportional to 172,717.89, 259,112.07 and 72,878.10

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Solution

The fourth proportional to 172,717.89, 259,112.07 and 72,878.10 is: 109,332.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,717.89 : 259,112.07 = 72,878.10 : x
  2. Step 2: Convert to fraction form
    172,717.89/259,112.07 = 72,878.10/x
  3. Step 3: Cross multiply
    172,717.89x = 259,112.07 × 72,878.10
  4. Step 4: Simplify right side
    172,717.89x = 18,883,595,348.67
  5. Step 5: Solve for x
    x = 18,883,595,348.67/172,717.89
  6. Step 6: Final answer
    x = 109,332.02

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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.