Home / 172,211.40-258,705.96-102,136.68

Finding the Fourth Proportional to 172,211.40, 258,705.96 and 102,136.68

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Solution

The fourth proportional to 172,211.40, 258,705.96 and 102,136.68 is: 153,435.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,211.40 : 258,705.96 = 102,136.68 : x
  2. Step 2: Convert to fraction form
    172,211.40/258,705.96 = 102,136.68/x
  3. Step 3: Cross multiply
    172,211.40x = 258,705.96 × 102,136.68
  4. Step 4: Simplify right side
    172,211.40x = 26,423,367,850.61
  5. Step 5: Solve for x
    x = 26,423,367,850.61/172,211.40
  6. Step 6: Final answer
    x = 153,435.65

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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.