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Finding the Fourth Proportional to 172,211.97, 258,320.59 and 65,601.85

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Solution

The fourth proportional to 172,211.97, 258,320.59 and 65,601.85 is: 98,403.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,211.97 : 258,320.59 = 65,601.85 : x
  2. Step 2: Convert to fraction form
    172,211.97/258,320.59 = 65,601.85/x
  3. Step 3: Cross multiply
    172,211.97x = 258,320.59 × 65,601.85
  4. Step 4: Simplify right side
    172,211.97x = 16,946,307,546.39
  5. Step 5: Solve for x
    x = 16,946,307,546.39/172,211.97
  6. Step 6: Final answer
    x = 98,403.77

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1.5x scale

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.