Home / 172,212.40-258,707.46-102,137.68

Finding the Fourth Proportional to 172,212.40, 258,707.46 and 102,137.68

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Solution

The fourth proportional to 172,212.40, 258,707.46 and 102,137.68 is: 153,437.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,212.40 : 258,707.46 = 102,137.68 : x
  2. Step 2: Convert to fraction form
    172,212.40/258,707.46 = 102,137.68/x
  3. Step 3: Cross multiply
    172,212.40x = 258,707.46 × 102,137.68
  4. Step 4: Simplify right side
    172,212.40x = 26,423,779,763.09
  5. Step 5: Solve for x
    x = 26,423,779,763.09/172,212.40
  6. Step 6: Final answer
    x = 153,437.15

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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.